diff --git a/api/AudioBufferSourceNode.json b/api/AudioBufferSourceNode.json
index da751ba44259bc..2a8d1db670a902 100644
--- a/api/AudioBufferSourceNode.json
+++ b/api/AudioBufferSourceNode.json
@@ -342,54 +342,6 @@
           }
         }
       },
-      "onended": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode/onended",
-          "support": {
-            "chrome": {
-              "version_added": "30"
-            },
-            "chrome_android": {
-              "version_added": "30"
-            },
-            "edge": {
-              "version_added": "12"
-            },
-            "firefox": {
-              "version_added": true
-            },
-            "firefox_android": {
-              "version_added": null
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": "17"
-            },
-            "opera_android": {
-              "version_added": "18"
-            },
-            "safari": {
-              "version_added": "6.1"
-            },
-            "safari_ios": {
-              "version_added": "7"
-            },
-            "samsunginternet_android": {
-              "version_added": "2.0"
-            },
-            "webview_android": {
-              "version_added": "4.4"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
       "playbackRate": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode/playbackRate",
@@ -467,10 +419,10 @@
               "version_added": "14"
             },
             "safari": {
-              "version_added": "6"
+              "version_added": "6.1"
             },
             "safari_ios": {
-              "version_added": "6"
+              "version_added": "7"
             },
             "samsunginternet_android": {
               "version_added": "1.5"
diff --git a/api/AudioScheduledSourceNode.json b/api/AudioScheduledSourceNode.json
index 86cbf032704717..f4e992ce437aba 100644
--- a/api/AudioScheduledSourceNode.json
+++ b/api/AudioScheduledSourceNode.json
@@ -10,8 +10,9 @@
             },
             {
               "version_added": "14",
-              "version_removed": "58",
-              "alternative_name": "AudioSourceNode"
+              "version_removed": "57",
+              "partial_implementation": true,
+              "notes": "The <code>AudioScheduledSourceNode</code> interface itself is not present, but some of its members are available on the <a href='https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode'><code>AudioBufferSourceNode</code></a>, <a href='https://developer.mozilla.org/docs/Web/API/ConstantSourceNode'><code>ConstantSourceNode</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/OscillatorNode'><code>OscillatorNode</code></a> interfaces."
             }
           ],
           "chrome_android": [
@@ -20,13 +21,22 @@
             },
             {
               "version_added": "18",
-              "version_removed": "58",
-              "alternative_name": "AudioSourceNode"
+              "version_removed": "57",
+              "partial_implementation": true,
+              "notes": "The <code>AudioScheduledSourceNode</code> interface itself is not present, but some of its members are available on the <a href='https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode'><code>AudioBufferSourceNode</code></a>, <a href='https://developer.mozilla.org/docs/Web/API/ConstantSourceNode'><code>ConstantSourceNode</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/OscillatorNode'><code>OscillatorNode</code></a> interfaces."
+            }
+          ],
+          "edge": [
+            {
+              "version_added": "79"
+            },
+            {
+              "version_added": "12",
+              "version_removed": "79",
+              "partial_implementation": true,
+              "notes": "The <code>AudioScheduledSourceNode</code> interface itself is not present, but some of its members are available on the <a href='https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode'><code>AudioBufferSourceNode</code></a>, <a href='https://developer.mozilla.org/docs/Web/API/ConstantSourceNode'><code>ConstantSourceNode</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/OscillatorNode'><code>OscillatorNode</code></a> interfaces."
             }
           ],
-          "edge": {
-            "version_added": "79"
-          },
           "firefox": [
             {
               "version_added": "53"
@@ -34,7 +44,8 @@
             {
               "version_added": "25",
               "version_removed": "53",
-              "alternative_name": "AudioSourceNode"
+              "partial_implementation": true,
+              "notes": "The <code>AudioScheduledSourceNode</code> interface itself is not present, but some of its members are available on the <a href='https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode'><code>AudioBufferSourceNode</code></a>, <a href='https://developer.mozilla.org/docs/Web/API/ConstantSourceNode'><code>ConstantSourceNode</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/OscillatorNode'><code>OscillatorNode</code></a> interfaces."
             }
           ],
           "firefox_android": [
@@ -44,7 +55,8 @@
             {
               "version_added": "25",
               "version_removed": "53",
-              "alternative_name": "AudioSourceNode"
+              "partial_implementation": true,
+              "notes": "The <code>AudioScheduledSourceNode</code> interface itself is not present, but some of its members are available on the <a href='https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode'><code>AudioBufferSourceNode</code></a>, <a href='https://developer.mozilla.org/docs/Web/API/ConstantSourceNode'><code>ConstantSourceNode</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/OscillatorNode'><code>OscillatorNode</code></a> interfaces."
             }
           ],
           "ie": {
@@ -57,33 +69,52 @@
             {
               "version_added": "15",
               "version_removed": "44",
-              "alternative_name": "AudioSourceNode"
+              "partial_implementation": true,
+              "notes": "The <code>AudioScheduledSourceNode</code> interface itself is not present, but some of its members are available on the <a href='https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode'><code>AudioBufferSourceNode</code></a>, <a href='https://developer.mozilla.org/docs/Web/API/ConstantSourceNode'><code>ConstantSourceNode</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/OscillatorNode'><code>OscillatorNode</code></a> interfaces."
             }
           ],
           "opera_android": [
             {
-              "version_added": "44"
+              "version_added": "43"
             },
             {
               "version_added": "14",
-              "version_removed": "44",
-              "alternative_name": "AudioSourceNode"
+              "version_removed": "43",
+              "partial_implementation": true,
+              "notes": "The <code>AudioScheduledSourceNode</code> interface itself is not present, but some of its members are available on the <a href='https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode'><code>AudioBufferSourceNode</code></a>, <a href='https://developer.mozilla.org/docs/Web/API/ConstantSourceNode'><code>ConstantSourceNode</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/OscillatorNode'><code>OscillatorNode</code></a> interfaces."
+            }
+          ],
+          "safari": [
+            {
+              "version_added": "14"
+            },
+            {
+              "version_added": "6",
+              "version_removed": "14",
+              "partial_implementation": true,
+              "notes": "The <code>AudioScheduledSourceNode</code> interface itself is not present, but some of its members are available on the <a href='https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode'><code>AudioBufferSourceNode</code></a>, <a href='https://developer.mozilla.org/docs/Web/API/ConstantSourceNode'><code>ConstantSourceNode</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/OscillatorNode'><code>OscillatorNode</code></a> interfaces."
+            }
+          ],
+          "safari_ios": [
+            {
+              "version_added": "14"
+            },
+            {
+              "version_added": "6",
+              "version_removed": "14",
+              "partial_implementation": true,
+              "notes": "The <code>AudioScheduledSourceNode</code> interface itself is not present, but some of its members are available on the <a href='https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode'><code>AudioBufferSourceNode</code></a>, <a href='https://developer.mozilla.org/docs/Web/API/ConstantSourceNode'><code>ConstantSourceNode</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/OscillatorNode'><code>OscillatorNode</code></a> interfaces."
             }
           ],
-          "safari": {
-            "version_added": "14"
-          },
-          "safari_ios": {
-            "version_added": "14"
-          },
           "samsunginternet_android": [
             {
               "version_added": "7.0"
             },
             {
-              "alternative_name": "AudioSourceNode",
               "version_added": "1.0",
-              "version_removed": "7.0"
+              "version_removed": "7.0",
+              "partial_implementation": true,
+              "notes": "The <code>AudioScheduledSourceNode</code> interface itself is not present, but some of its members are available on the <a href='https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode'><code>AudioBufferSourceNode</code></a>, <a href='https://developer.mozilla.org/docs/Web/API/ConstantSourceNode'><code>ConstantSourceNode</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/OscillatorNode'><code>OscillatorNode</code></a> interfaces."
             }
           ],
           "webview_android": [
@@ -92,8 +123,9 @@
             },
             {
               "version_added": "≤37",
-              "version_removed": "58",
-              "alternative_name": "AudioSourceNode"
+              "version_removed": "57",
+              "partial_implementation": true,
+              "notes": "The <code>AudioScheduledSourceNode</code> interface itself is not present, but some of its members are available on the <a href='https://developer.mozilla.org/docs/Web/API/AudioBufferSourceNode'><code>AudioBufferSourceNode</code></a>, <a href='https://developer.mozilla.org/docs/Web/API/ConstantSourceNode'><code>ConstantSourceNode</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/OscillatorNode'><code>OscillatorNode</code></a> interfaces."
             }
           ]
         },
@@ -109,16 +141,16 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioScheduledSourceNode/ended_event",
           "support": {
             "chrome": {
-              "version_added": "14"
+              "version_added": "30"
             },
             "chrome_android": {
-              "version_added": "18"
+              "version_added": "30"
             },
             "edge": {
-              "version_added": "79"
+              "version_added": "12"
             },
             "firefox": {
-              "version_added": "53"
+              "version_added": "25"
             },
             "firefox_android": {
               "version_added": "25"
@@ -127,19 +159,19 @@
               "version_added": false
             },
             "opera": {
-              "version_added": "15"
+              "version_added": "17"
             },
             "opera_android": {
-              "version_added": "14"
+              "version_added": "18"
             },
             "safari": {
-              "version_added": "14"
+              "version_added": "7"
             },
             "safari_ios": {
-              "version_added": "14"
+              "version_added": "7"
             },
             "samsunginternet_android": {
-              "version_added": "1.0"
+              "version_added": "2.0"
             },
             "webview_android": {
               "version_added": "≤37"
@@ -157,16 +189,16 @@
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioScheduledSourceNode/onended",
           "support": {
             "chrome": {
-              "version_added": "14"
+              "version_added": "30"
             },
             "chrome_android": {
-              "version_added": "18"
+              "version_added": "30"
             },
             "edge": {
-              "version_added": "79"
+              "version_added": "12"
             },
             "firefox": {
-              "version_added": "53"
+              "version_added": "25"
             },
             "firefox_android": {
               "version_added": "25"
@@ -175,19 +207,19 @@
               "version_added": false
             },
             "opera": {
-              "version_added": "15"
+              "version_added": "17"
             },
             "opera_android": {
-              "version_added": "14"
+              "version_added": "18"
             },
             "safari": {
-              "version_added": "14"
+              "version_added": "7"
             },
             "safari_ios": {
-              "version_added": "14"
+              "version_added": "7"
             },
             "samsunginternet_android": {
-              "version_added": "1.0"
+              "version_added": "2.0"
             },
             "webview_android": {
               "version_added": "≤37"
@@ -211,10 +243,10 @@
               "version_added": "25"
             },
             "edge": {
-              "version_added": "79"
+              "version_added": "12"
             },
             "firefox": {
-              "version_added": "53"
+              "version_added": "25"
             },
             "firefox_android": {
               "version_added": "25"
@@ -229,10 +261,10 @@
               "version_added": "14"
             },
             "safari": {
-              "version_added": "14"
+              "version_added": "6.1"
             },
             "safari_ios": {
-              "version_added": "14"
+              "version_added": "7"
             },
             "samsunginternet_android": {
               "version_added": "1.5"
@@ -259,10 +291,10 @@
               "version_added": "25"
             },
             "edge": {
-              "version_added": "79"
+              "version_added": "12"
             },
             "firefox": {
-              "version_added": "53"
+              "version_added": "25"
             },
             "firefox_android": {
               "version_added": "25"
@@ -277,10 +309,10 @@
               "version_added": "14"
             },
             "safari": {
-              "version_added": "14"
+              "version_added": "6.1"
             },
             "safari_ios": {
-              "version_added": "14"
+              "version_added": "7"
             },
             "samsunginternet_android": {
               "version_added": "1.5"
diff --git a/api/ConstantSourceNode.json b/api/ConstantSourceNode.json
index 69da5f4ea05de8..d8592249db3601 100644
--- a/api/ConstantSourceNode.json
+++ b/api/ConstantSourceNode.json
@@ -14,12 +14,10 @@
             "version_added": "79"
           },
           "firefox": {
-            "version_added": "52",
-            "notes": "<code>ConstantSourceNode</code> inherited from <code>AudioNode</code> initially, but was changed in Firefox 53 to inherit from <code>AudioScheduledSourceNode</code>."
+            "version_added": "52"
           },
           "firefox_android": {
-            "version_added": "52",
-            "notes": "<code>ConstantSourceNode</code> inherited from <code>AudioNode</code> initially, but was changed in Firefox 53 to inherit from <code>AudioScheduledSourceNode</code>."
+            "version_added": "52"
           },
           "ie": {
             "version_added": false
@@ -112,66 +110,10 @@
               "version_added": "79"
             },
             "firefox": {
-              "version_added": "52",
-              "version_removed": "53",
-              "notes": "This property is still available, but via the inheritance of <code>AudioScheduledSourceNode</code>."
-            },
-            "firefox_android": {
-              "version_added": "52",
-              "version_removed": "53",
-              "notes": "This property is still available, but via the inheritance of <code>AudioScheduledSourceNode</code>."
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": false
-            },
-            "safari": {
-              "version_added": false
-            },
-            "safari_ios": {
-              "version_added": false
-            },
-            "samsunginternet_android": {
-              "version_added": false
-            },
-            "webview_android": {
-              "version_added": false
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
-      "onended": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ConstantSourceNode/onended",
-          "support": {
-            "chrome": {
-              "version_added": "56"
-            },
-            "chrome_android": {
-              "version_added": "56"
-            },
-            "edge": {
-              "version_added": "79"
-            },
-            "firefox": {
-              "version_added": "52",
-              "version_removed": "53",
-              "notes": "This property is still available, but via the inheritance of <code>AudioScheduledSourceNode</code>."
+              "version_added": "52"
             },
             "firefox_android": {
-              "version_added": "52",
-              "version_removed": "53",
-              "notes": "This property is still available, but via the inheritance of <code>AudioScheduledSourceNode</code>."
+              "version_added": "52"
             },
             "ie": {
               "version_added": false
@@ -189,114 +131,10 @@
               "version_added": false
             },
             "samsunginternet_android": {
-              "version_added": "6.0"
-            },
-            "webview_android": {
-              "version_added": "56"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
-      "start": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ConstantSourceNode/start",
-          "support": {
-            "chrome": {
-              "version_added": "56"
-            },
-            "chrome_android": {
-              "version_added": "56"
-            },
-            "edge": {
-              "version_added": "79"
-            },
-            "firefox": {
-              "version_added": "52",
-              "version_removed": "53",
-              "notes": "This property is still available, but via the inheritance of <code>AudioScheduledSourceNode</code>."
-            },
-            "firefox_android": {
-              "version_added": "52",
-              "version_removed": "53",
-              "notes": "This property is still available, but via the inheritance of <code>AudioScheduledSourceNode</code>."
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": false
-            },
-            "safari": {
               "version_added": false
             },
-            "safari_ios": {
-              "version_added": false
-            },
-            "samsunginternet_android": {
-              "version_added": "6.0"
-            },
             "webview_android": {
-              "version_added": "56"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
-      "stop": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ConstantSourceNode/stop",
-          "support": {
-            "chrome": {
-              "version_added": "56"
-            },
-            "chrome_android": {
-              "version_added": "56"
-            },
-            "edge": {
-              "version_added": "79"
-            },
-            "firefox": {
-              "version_added": "52",
-              "version_removed": "53",
-              "notes": "This property is still available, but via the inheritance of <code>AudioScheduledSourceNode</code>."
-            },
-            "firefox_android": {
-              "version_added": "52",
-              "version_removed": "53",
-              "notes": "This property is still available, but via the inheritance of <code>AudioScheduledSourceNode</code>."
-            },
-            "ie": {
               "version_added": false
-            },
-            "opera": {
-              "version_added": false
-            },
-            "opera_android": {
-              "version_added": false
-            },
-            "safari": {
-              "version_added": false
-            },
-            "safari_ios": {
-              "version_added": false
-            },
-            "samsunginternet_android": {
-              "version_added": "6.0"
-            },
-            "webview_android": {
-              "version_added": "56"
             }
           },
           "status": {
diff --git a/api/OscillatorNode.json b/api/OscillatorNode.json
index c7b843f2c7ad86..fc63a52c469f2c 100644
--- a/api/OscillatorNode.json
+++ b/api/OscillatorNode.json
@@ -196,54 +196,6 @@
           }
         }
       },
-      "onended": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/OscillatorNode/onended",
-          "support": {
-            "chrome": {
-              "version_added": "30"
-            },
-            "chrome_android": {
-              "version_added": "30"
-            },
-            "edge": {
-              "version_added": "12"
-            },
-            "firefox": {
-              "version_added": "25"
-            },
-            "firefox_android": {
-              "version_added": "25"
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": "17"
-            },
-            "opera_android": {
-              "version_added": "18"
-            },
-            "safari": {
-              "version_added": "6.1"
-            },
-            "safari_ios": {
-              "version_added": "7"
-            },
-            "samsunginternet_android": {
-              "version_added": "2.0"
-            },
-            "webview_android": {
-              "version_added": "4.4"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
       "setPeriodicWave": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OscillatorNode/setPeriodicWave",
@@ -292,106 +244,6 @@
           }
         }
       },
-      "start": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/OscillatorNode/start",
-          "support": {
-            "chrome": {
-              "version_added": "24"
-            },
-            "chrome_android": {
-              "version_added": "25"
-            },
-            "edge": {
-              "version_added": "12"
-            },
-            "firefox": {
-              "version_added": "25",
-              "notes": "Before Firefox 30, the <code>when</code> parameter was not optional."
-            },
-            "firefox_android": {
-              "version_added": "25",
-              "notes": "Before Firefox 30, the <code>when</code> parameter was not optional."
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": "15"
-            },
-            "opera_android": {
-              "version_added": "14"
-            },
-            "safari": {
-              "version_added": "6"
-            },
-            "safari_ios": {
-              "version_added": null
-            },
-            "samsunginternet_android": {
-              "version_added": "1.5"
-            },
-            "webview_android": {
-              "version_added": "≤37"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
-      "stop": {
-        "__compat": {
-          "mdn_url": "https://developer.mozilla.org/docs/Web/API/OscillatorNode/stop",
-          "support": {
-            "chrome": {
-              "version_added": "24"
-            },
-            "chrome_android": {
-              "version_added": "25"
-            },
-            "edge": {
-              "version_added": "12"
-            },
-            "firefox": {
-              "version_added": "25",
-              "notes": "Before Firefox 30, the <code>when</code> parameter was not optional."
-            },
-            "firefox_android": {
-              "version_added": "25",
-              "notes": "Before Firefox 30, the <code>when</code> parameter was not optional."
-            },
-            "ie": {
-              "version_added": false
-            },
-            "opera": {
-              "version_added": "15"
-            },
-            "opera_android": {
-              "version_added": "14"
-            },
-            "safari": {
-              "version_added": "6"
-            },
-            "safari_ios": {
-              "version_added": null
-            },
-            "samsunginternet_android": {
-              "version_added": "1.5"
-            },
-            "webview_android": {
-              "version_added": "≤37"
-            }
-          },
-          "status": {
-            "experimental": false,
-            "standard_track": true,
-            "deprecated": false
-          }
-        }
-      },
       "type": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/OscillatorNode/type",