diff --git a/feature-group-definitions/abs-sign.dist.yml b/feature-group-definitions/abs-sign.dist.yml
new file mode 100644
index 00000000000..e216eb272e5
--- /dev/null
+++ b/feature-group-definitions/abs-sign.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: abs-sign.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: abs() and sign()
+description: The `abs()` and `sign()` CSS functions compute the absolute value or the sign of the input.
+spec: https://drafts.csswg.org/css-values-4/#sign-funcs
+status:
+  baseline: false
+  support:
+    firefox: "118"
+    firefox_android: "118"
+    safari: "15.4"
+    safari_ios: "15.4"
+compat_features:
+  - css.types.abs
+  - css.types.sign
diff --git a/feature-group-definitions/accent-color.dist.yml b/feature-group-definitions/accent-color.dist.yml
new file mode 100644
index 00000000000..d2f7a5cf399
--- /dev/null
+++ b/feature-group-definitions/accent-color.dist.yml
@@ -0,0 +1,21 @@
+# Generated from: accent-color.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: accent-color
+description: The `accent-color` CSS property sets a color for checkboxes, radio buttons, and other form controls.
+spec: https://drafts.csswg.org/css-ui-4/#widget-accent
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/695
+status:
+  baseline: low
+  baseline_low_date: 2022-03-14
+  support:
+    chrome: "93"
+    chrome_android: "93"
+    edge: "93"
+    firefox: "92"
+    firefox_android: "92"
+    safari: "15.4"
+    safari_ios: "15.4"
+compat_features:
+  - css.properties.accent-color
+  - css.properties.accent-color.auto
diff --git a/feature-group-definitions/animation-composition.dist.yml b/feature-group-definitions/animation-composition.dist.yml
new file mode 100644
index 00000000000..2a121f74a36
--- /dev/null
+++ b/feature-group-definitions/animation-composition.dist.yml
@@ -0,0 +1,20 @@
+# Generated from: animation-composition.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: animation-composition
+description: The `animation-composition` CSS property chooses how to combine animations that affect the same property.
+spec: https://drafts.csswg.org/css-animations-2/#animation-composition
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/743
+status:
+  baseline: low
+  baseline_low_date: 2023-07-04
+  support:
+    chrome: "112"
+    chrome_android: "112"
+    edge: "112"
+    firefox: "115"
+    firefox_android: "115"
+    safari: "16"
+    safari_ios: "16"
+compat_features:
+  - css.properties.animation-composition
diff --git a/feature-group-definitions/aspect-ratio.dist.yml b/feature-group-definitions/aspect-ratio.dist.yml
new file mode 100644
index 00000000000..d03ff1ed6b1
--- /dev/null
+++ b/feature-group-definitions/aspect-ratio.dist.yml
@@ -0,0 +1,23 @@
+# Generated from: aspect-ratio.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: aspect-ratio
+description: "The `aspect-ratio` CSS property controls the width-to-height ratio of elements. For `<img>` and `<video>` elements, the `width` and `height` attributes used together with `height: auto` control the aspect ratio while the image/video is loading."
+spec: https://drafts.csswg.org/css-sizing-4/#aspect-ratio
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/657
+status:
+  baseline: high
+  baseline_low_date: 2021-09-20
+  baseline_high_date: 2024-03-20
+  support:
+    chrome: "88"
+    chrome_android: "88"
+    edge: "88"
+    firefox: "89"
+    firefox_android: "89"
+    safari: "15"
+    safari_ios: "15"
+compat_features:
+  - css.properties.aspect-ratio
+  - html.elements.img.aspect_ratio_computed_from_attributes
+  - html.elements.video.aspect_ratio_computed_from_attributes
diff --git a/feature-group-definitions/autofill.dist.yml b/feature-group-definitions/autofill.dist.yml
new file mode 100644
index 00000000000..583f48d07e3
--- /dev/null
+++ b/feature-group-definitions/autofill.dist.yml
@@ -0,0 +1,19 @@
+# Generated from: autofill.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: ":autofill"
+description: "The `:autofill` pseudo-class matches `<input>` elements that have been filled in automatically by the browser."
+spec: https://html.spec.whatwg.org/multipage/semantics-other.html#selector-autofill
+status:
+  baseline: low
+  baseline_low_date: 2023-02-09
+  support:
+    chrome: "110"
+    chrome_android: "110"
+    edge: "110"
+    firefox: "86"
+    firefox_android: "86"
+    safari: "15"
+    safari_ios: "15"
+compat_features:
+  - css.selectors.autofill
diff --git a/feature-group-definitions/background-clip-text.dist.yml b/feature-group-definitions/background-clip-text.dist.yml
new file mode 100644
index 00000000000..1be8e6b9206
--- /dev/null
+++ b/feature-group-definitions/background-clip-text.dist.yml
@@ -0,0 +1,20 @@
+# Generated from: background-clip-text.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+# Note: This is a subfeature of background-clip and may eventually merge into that.
+name: "background-clip: text"
+description: "The `background-clip: text` CSS property value draws the background underneath only the text in the element."
+spec: https://drafts.csswg.org/css-backgrounds-4/#background-clip
+status:
+  baseline: low
+  baseline_low_date: 2023-12-07
+  support:
+    chrome: "120"
+    chrome_android: "120"
+    edge: "120"
+    firefox: "49"
+    firefox_android: "49"
+    safari: "14"
+    safari_ios: "14"
+compat_features:
+  - css.properties.background-clip.text
diff --git a/feature-group-definitions/background-clip.dist.yml b/feature-group-definitions/background-clip.dist.yml
new file mode 100644
index 00000000000..ee1ccf24d6b
--- /dev/null
+++ b/feature-group-definitions/background-clip.dist.yml
@@ -0,0 +1,25 @@
+# Generated from: background-clip.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+# Note: This does not include `background-clip: text`, which is a separate
+# feature. Consider both if making any changes. They may eventually merge.
+name: background-clip
+description: "The `background-clip` CSS property sets the extent of the background: the padding box, the content box, or the default border box."
+spec: https://drafts.csswg.org/css-backgrounds-3/#background-clip
+status:
+  baseline: high
+  baseline_low_date: 2015-07-29
+  baseline_high_date: 2018-01-29
+  support:
+    chrome: "1"
+    chrome_android: "18"
+    edge: "12"
+    firefox: "4"
+    firefox_android: "4"
+    safari: "5"
+    safari_ios: "5"
+compat_features:
+  - css.properties.background-clip
+  - css.properties.background-clip.border-box
+  - css.properties.background-clip.content-box
+  - css.properties.background-clip.padding-box
diff --git a/feature-group-definitions/blocking-render.dist.yml b/feature-group-definitions/blocking-render.dist.yml
new file mode 100644
index 00000000000..cc763de89d6
--- /dev/null
+++ b/feature-group-definitions/blocking-render.dist.yml
@@ -0,0 +1,26 @@
+# Generated from: blocking-render.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: 'blocking="render"'
+description: 'The `blocking="render"` attribute for `<link>`, `<script>`, and `<style>` elements blocks rendering until the external script or stylesheet has been loaded. For `<link rel="expect">`, rendering is blocked until a specific element is in the DOM.'
+# A few additional "limitations" that aren't in the description but could potentially be:
+#  - Rendering is not blocked indefinitely, there are UA-defined timeouts
+#  - Only works for text/html documents
+#  - Only works in <head>
+#  - Doesn't work on non-async classic scripts
+#  - Only works for on <link rel=stylesheet> and <link rel=expect>, not other <link>s
+spec: https://html.spec.whatwg.org/multipage/urls-and-fetching.html#blocking-attributes
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/4183
+status:
+  baseline: false
+  support:
+    chrome: "105"
+    chrome_android: "105"
+    edge: "105"
+compat_features:
+  - api.HTMLLinkElement.blocking
+  - api.HTMLScriptElement.blocking
+  - api.HTMLStyleElement.blocking
+  - html.elements.link.blocking
+  - html.elements.script.blocking
+  - html.elements.style.blocking
diff --git a/feature-group-definitions/colrv1.dist.yml b/feature-group-definitions/colrv1.dist.yml
new file mode 100644
index 00000000000..de791f2825c
--- /dev/null
+++ b/feature-group-definitions/colrv1.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: colrv1.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: COLRv1
+spec: https://www.iso.org/standard/87621.html
+caniuse: colr-v1
+status:
+  baseline: false
+  support:
+    chrome: "98"
+    chrome_android: "98"
+    edge: "98"
+    firefox: "107"
+    firefox_android: "107"
+compat_features:
+  - css.at-rules.font-face.OpenType_COLRv1
diff --git a/feature-group-definitions/container-style-queries.dist.yml b/feature-group-definitions/container-style-queries.dist.yml
new file mode 100644
index 00000000000..c76801162ca
--- /dev/null
+++ b/feature-group-definitions/container-style-queries.dist.yml
@@ -0,0 +1,15 @@
+# Generated from: container-style-queries.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Container style queries
+spec: https://drafts.csswg.org/css-contain-3/#style-container
+caniuse: css-container-queries-style
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/4550
+status:
+  baseline: false
+  support:
+    chrome: "111"
+    chrome_android: "111"
+    edge: "111"
+compat_features:
+  - css.at-rules.container.style_queries_for_custom_properties
diff --git a/feature-group-definitions/details-name.dist.yml b/feature-group-definitions/details-name.dist.yml
new file mode 100644
index 00000000000..79f499eff09
--- /dev/null
+++ b/feature-group-definitions/details-name.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: details-name.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Mutually exclusive <details> elements
+spec: https://html.spec.whatwg.org/multipage/interactive-elements.html#attr-details-name
+status:
+  baseline: false
+  support:
+    chrome: "120"
+    chrome_android: "120"
+    edge: "120"
+    safari: "17.2"
+    safari_ios: "17.2"
+compat_features:
+  - api.HTMLDetailsElement.name
+  - html.elements.details.name
diff --git a/feature-group-definitions/exp-functions.dist.yml b/feature-group-definitions/exp-functions.dist.yml
new file mode 100644
index 00000000000..06fafa2d827
--- /dev/null
+++ b/feature-group-definitions/exp-functions.dist.yml
@@ -0,0 +1,23 @@
+# Generated from: exp-functions.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: pow(), sqrt(), hypot(), log(), and exp()
+description: The `pow()`, `sqrt()`, `hypot()`, `log()`, and `exp()` CSS functions compute various exponential functions.
+spec: https://drafts.csswg.org/css-values-4/#exponent-funcs
+status:
+  baseline: low
+  baseline_low_date: 2023-12-07
+  support:
+    chrome: "120"
+    chrome_android: "120"
+    edge: "120"
+    firefox: "118"
+    firefox_android: "118"
+    safari: "15.4"
+    safari_ios: "15.4"
+compat_features:
+  - css.types.pow
+  - css.types.sqrt
+  - css.types.hypot
+  - css.types.log
+  - css.types.exp
diff --git a/feature-group-definitions/font-optical-sizing.dist.yml b/feature-group-definitions/font-optical-sizing.dist.yml
new file mode 100644
index 00000000000..4d0563b1258
--- /dev/null
+++ b/feature-group-definitions/font-optical-sizing.dist.yml
@@ -0,0 +1,20 @@
+# Generated from: font-optical-sizing.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: font-optical-sizing
+spec: https://drafts.csswg.org/css-fonts-4/#font-optical-sizing-def
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/647
+status:
+  baseline: high
+  baseline_low_date: 2019-12-17
+  baseline_high_date: 2022-06-17
+  support:
+    chrome: "79"
+    chrome_android: "79"
+    edge: "17"
+    firefox: "62"
+    firefox_android: "62"
+    safari: "11"
+    safari_ios: "11"
+compat_features:
+  - css.properties.font-optical-sizing
diff --git a/feature-group-definitions/font-palette-animation.dist.yml b/feature-group-definitions/font-palette-animation.dist.yml
new file mode 100644
index 00000000000..1a2cdb42f4a
--- /dev/null
+++ b/feature-group-definitions/font-palette-animation.dist.yml
@@ -0,0 +1,14 @@
+# Generated from: font-palette-animation.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: font-palette animation
+spec: https://drafts.csswg.org/css-fonts-4/#font-palette-prop
+usage_stats: https://chromestatus.com/metrics/css/timeline/animated/709
+status:
+  baseline: false
+  support:
+    chrome: "121"
+    chrome_android: "121"
+    edge: "121"
+compat_features:
+  - css.properties.font-palette.palette-mix_function
diff --git a/feature-group-definitions/font-palette.dist.yml b/feature-group-definitions/font-palette.dist.yml
new file mode 100644
index 00000000000..130def91678
--- /dev/null
+++ b/feature-group-definitions/font-palette.dist.yml
@@ -0,0 +1,30 @@
+# Generated from: font-palette.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: font-palette and @font-palette-values
+spec:
+  - https://drafts.csswg.org/css-fonts-4/#font-palette-prop
+  - https://drafts.csswg.org/css-fonts-4/#font-palette-values
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/709
+status:
+  baseline: low
+  baseline_low_date: 2022-11-15
+  support:
+    chrome: "101"
+    chrome_android: "101"
+    edge: "101"
+    firefox: "107"
+    firefox_android: "107"
+    safari: "15.4"
+    safari_ios: "15.4"
+compat_features:
+  - api.CSSFontPaletteValuesRule
+  - api.CSSFontPaletteValuesRule.basePalette
+  - api.CSSFontPaletteValuesRule.fontFamily
+  - api.CSSFontPaletteValuesRule.name
+  - api.CSSFontPaletteValuesRule.overrideColors
+  - css.at-rules.font-palette-values
+  - css.at-rules.font-palette-values.base-palette
+  - css.at-rules.font-palette-values.font-family
+  - css.at-rules.font-palette-values.override-colors
+  - css.properties.font-palette
diff --git a/feature-group-definitions/individual-transforms.dist.yml b/feature-group-definitions/individual-transforms.dist.yml
new file mode 100644
index 00000000000..a95fef61dce
--- /dev/null
+++ b/feature-group-definitions/individual-transforms.dist.yml
@@ -0,0 +1,25 @@
+# Generated from: individual-transforms.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Individual transform properties
+description: Transform elements with separate `translate`, `rotate`, and `scale` CSS properties.
+spec: https://drafts.csswg.org/css-transforms-2/#individual-transforms
+usage_stats:
+  - https://chromestatus.com/metrics/css/timeline/popularity/504 # translate
+  - https://chromestatus.com/metrics/css/timeline/popularity/505 # rotate
+  - https://chromestatus.com/metrics/css/timeline/popularity/506 # scale
+status:
+  baseline: low
+  baseline_low_date: 2022-08-09
+  support:
+    chrome: "104"
+    chrome_android: "104"
+    edge: "104"
+    firefox: "72"
+    firefox_android: "79"
+    safari: "14.1"
+    safari_ios: "14.5"
+compat_features:
+  - css.properties.rotate
+  - css.properties.scale
+  - css.properties.translate
diff --git a/feature-group-definitions/linear-easing.dist.yml b/feature-group-definitions/linear-easing.dist.yml
new file mode 100644
index 00000000000..c224ab04047
--- /dev/null
+++ b/feature-group-definitions/linear-easing.dist.yml
@@ -0,0 +1,19 @@
+# Generated from: linear-easing.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: linear() easing
+description: The `linear()` easing function for animations and transitions interpolates linearly between the control points, and can be used to approximate complex easing functions, such as a bounce effect.
+spec: https://drafts.csswg.org/css-easing-2/#the-linear-easing-function
+status:
+  baseline: low
+  baseline_low_date: 2023-12-11
+  support:
+    chrome: "113"
+    chrome_android: "113"
+    edge: "113"
+    firefox: "112"
+    firefox_android: "112"
+    safari: "17.2"
+    safari_ios: "17.2"
+compat_features:
+  - css.types.easing-function.linear-function
diff --git a/feature-group-definitions/prefers-color-scheme.dist.yml b/feature-group-definitions/prefers-color-scheme.dist.yml
new file mode 100644
index 00000000000..cbd03feb315
--- /dev/null
+++ b/feature-group-definitions/prefers-color-scheme.dist.yml
@@ -0,0 +1,20 @@
+# Generated from: prefers-color-scheme.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: prefers-color-scheme
+description: The `prefers-color-scheme` CSS media query detects the requested color scheme, light or dark.
+spec: https://drafts.csswg.org/mediaqueries-5/#prefers-color-scheme
+status:
+  baseline: high
+  baseline_low_date: 2020-01-15
+  baseline_high_date: 2022-07-15
+  support:
+    chrome: "76"
+    chrome_android: "76"
+    edge: "79"
+    firefox: "67"
+    firefox_android: "67"
+    safari: "12.1"
+    safari_ios: "13"
+compat_features:
+  - css.at-rules.media.prefers-color-scheme
diff --git a/feature-group-definitions/round-mod-rem.dist.yml b/feature-group-definitions/round-mod-rem.dist.yml
new file mode 100644
index 00000000000..d2f79c7c3d0
--- /dev/null
+++ b/feature-group-definitions/round-mod-rem.dist.yml
@@ -0,0 +1,17 @@
+# Generated from: round-mod-rem.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: round(), mod(), and rem()
+description: The `round()`, `mod()`, and `rem()` CSS functions compute rounded values and the remainder after division.
+spec: https://drafts.csswg.org/css-values-4/#round-func
+status:
+  baseline: false
+  support:
+    firefox: "118"
+    firefox_android: "118"
+    safari: "15.4"
+    safari_ios: "15.4"
+compat_features:
+  - css.types.round
+  - css.types.mod
+  - css.types.rem
diff --git a/feature-group-definitions/scrollbar-color.dist.yml b/feature-group-definitions/scrollbar-color.dist.yml
new file mode 100644
index 00000000000..41f03c95776
--- /dev/null
+++ b/feature-group-definitions/scrollbar-color.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: scrollbar-color.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: scrollbar-color
+spec: https://drafts.csswg.org/css-scrollbars-1/#scrollbar-color
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/763
+status:
+  baseline: false
+  support:
+    chrome: "121"
+    chrome_android: "121"
+    edge: "121"
+    firefox: "64"
+    firefox_android: "64"
+compat_features:
+  - css.properties.scrollbar-color
diff --git a/feature-group-definitions/scrollbar-gutter.dist.yml b/feature-group-definitions/scrollbar-gutter.dist.yml
new file mode 100644
index 00000000000..83c5f08148c
--- /dev/null
+++ b/feature-group-definitions/scrollbar-gutter.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: scrollbar-gutter.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: scrollbar-gutter
+spec: https://drafts.csswg.org/css-overflow-3/#scrollbar-gutter-property
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/671
+status:
+  baseline: false
+  support:
+    chrome: "94"
+    chrome_android: "94"
+    edge: "94"
+    firefox: "97"
+    firefox_android: "97"
+compat_features:
+  - css.properties.scrollbar-gutter
diff --git a/feature-group-definitions/scrollbar-width.dist.yml b/feature-group-definitions/scrollbar-width.dist.yml
new file mode 100644
index 00000000000..364c457e268
--- /dev/null
+++ b/feature-group-definitions/scrollbar-width.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: scrollbar-width.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: scrollbar-width
+spec: https://drafts.csswg.org/css-scrollbars-1/#scrollbar-width
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/680
+status:
+  baseline: false
+  support:
+    chrome: "121"
+    chrome_android: "121"
+    edge: "121"
+    firefox: "64"
+    firefox_android: "64"
+compat_features:
+  - css.properties.scrollbar-width
diff --git a/feature-group-definitions/search.dist.yml b/feature-group-definitions/search.dist.yml
new file mode 100644
index 00000000000..b1cea0f5bc6
--- /dev/null
+++ b/feature-group-definitions/search.dist.yml
@@ -0,0 +1,18 @@
+# Generated from: search.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: <search>
+spec: https://html.spec.whatwg.org/multipage/grouping-content.html#the-search-element
+status:
+  baseline: low
+  baseline_low_date: 2023-10-13
+  support:
+    chrome: "118"
+    chrome_android: "118"
+    edge: "118"
+    firefox: "118"
+    firefox_android: "118"
+    safari: "17"
+    safari_ios: "17"
+compat_features:
+  - html.elements.search
diff --git a/feature-group-definitions/show-picker-select.dist.yml b/feature-group-definitions/show-picker-select.dist.yml
new file mode 100644
index 00000000000..1feb0aa819c
--- /dev/null
+++ b/feature-group-definitions/show-picker-select.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: show-picker-select.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: showPicker() for <select>
+description: The `showPicker()` method for `<select>` elements shows the dropdown menu or other user interface for picking one of the options.
+spec: https://html.spec.whatwg.org/multipage/input.html#dom-select-showpicker
+status:
+  baseline: false
+  support:
+    chrome: "121"
+    chrome_android: "121"
+    edge: "121"
+    firefox: "122"
+    firefox_android: "122"
+compat_features:
+  - api.HTMLSelectElement.showPicker
diff --git a/feature-group-definitions/starting-style.dist.yml b/feature-group-definitions/starting-style.dist.yml
new file mode 100644
index 00000000000..5ce119bc066
--- /dev/null
+++ b/feature-group-definitions/starting-style.dist.yml
@@ -0,0 +1,14 @@
+# Generated from: starting-style.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: "@starting-style"
+spec: https://drafts.csswg.org/css-transitions-2/#defining-before-change-style
+status:
+  baseline: false
+  support:
+    chrome: "117"
+    chrome_android: "117"
+    edge: "117"
+compat_features:
+  - api.CSSStartingStyleRule
+  - css.at-rules.starting-style
diff --git a/feature-group-definitions/template.dist.yml b/feature-group-definitions/template.dist.yml
new file mode 100644
index 00000000000..862cfd9eebf
--- /dev/null
+++ b/feature-group-definitions/template.dist.yml
@@ -0,0 +1,22 @@
+# Generated from: template.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: <template>
+spec: https://html.spec.whatwg.org/multipage/scripting.html#the-template-element
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/2769
+status:
+  baseline: high
+  baseline_low_date: 2015-11-12
+  baseline_high_date: 2018-05-12
+  support:
+    chrome: "26"
+    chrome_android: "26"
+    edge: "13"
+    firefox: "22"
+    firefox_android: "22"
+    safari: "8"
+    safari_ios: "8"
+compat_features:
+  - api.HTMLTemplateElement
+  - api.HTMLTemplateElement.content
+  - html.elements.template
diff --git a/feature-group-definitions/text-spacing-trim.dist.yml b/feature-group-definitions/text-spacing-trim.dist.yml
new file mode 100644
index 00000000000..a966a0342d3
--- /dev/null
+++ b/feature-group-definitions/text-spacing-trim.dist.yml
@@ -0,0 +1,14 @@
+# Generated from: text-spacing-trim.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: text-spacing-trim
+description: The `text-spacing-trim` CSS property controls spacing around CJK characters, avoiding excessive whitespace when using full-width punctuation characters.
+spec: https://drafts.csswg.org/css-text-4/#text-spacing-trim-property
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/771
+status:
+  baseline: false
+  support:
+    chrome: "123"
+    chrome_android: "123"
+compat_features:
+  - css.properties.text-spacing-trim
diff --git a/feature-group-definitions/text-wrap-pretty.dist.yml b/feature-group-definitions/text-wrap-pretty.dist.yml
new file mode 100644
index 00000000000..61dc1e2f94a
--- /dev/null
+++ b/feature-group-definitions/text-wrap-pretty.dist.yml
@@ -0,0 +1,14 @@
+# Generated from: text-wrap-pretty.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: "text-wrap: pretty"
+spec: https://drafts.csswg.org/css-text-4/#valdef-text-wrap-style-pretty
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/4674
+status:
+  baseline: false
+  support:
+    chrome: "117"
+    chrome_android: "117"
+    edge: "117"
+compat_features:
+  - css.properties.text-wrap.pretty
diff --git a/feature-group-definitions/transition-behavior.dist.yml b/feature-group-definitions/transition-behavior.dist.yml
new file mode 100644
index 00000000000..422fb5c1b80
--- /dev/null
+++ b/feature-group-definitions/transition-behavior.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: transition-behavior.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: transition-behavior
+spec: https://drafts.csswg.org/css-transitions-2/#transition-behavior-property
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/766
+status:
+  baseline: false
+  support:
+    chrome: "117"
+    chrome_android: "117"
+    edge: "117"
+    safari: "17.4"
+    safari_ios: "17.4"
+compat_features:
+  - css.properties.transition-behavior
diff --git a/feature-group-definitions/trig-functions.dist.yml b/feature-group-definitions/trig-functions.dist.yml
new file mode 100644
index 00000000000..39a0b348f2b
--- /dev/null
+++ b/feature-group-definitions/trig-functions.dist.yml
@@ -0,0 +1,25 @@
+# Generated from: trig-functions.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: sin(), cos(), tan(), asin(), acos(), atan(), and atan2()
+description: The `sin()`, `cos()`, `tan()`, `asin()`, `acos()`, `atan()`, and `atan2()` CSS functions compute various trigonometric functions.
+spec: https://drafts.csswg.org/css-values-4/#trig-funcs
+status:
+  baseline: low
+  baseline_low_date: 2023-03-13
+  support:
+    chrome: "111"
+    chrome_android: "111"
+    edge: "111"
+    firefox: "108"
+    firefox_android: "108"
+    safari: "15.4"
+    safari_ios: "15.4"
+compat_features:
+  - css.types.sin
+  - css.types.cos
+  - css.types.tan
+  - css.types.asin
+  - css.types.acos
+  - css.types.atan
+  - css.types.atan2
diff --git a/feature-group-definitions/user-pseudos.dist.yml b/feature-group-definitions/user-pseudos.dist.yml
new file mode 100644
index 00000000000..9fab862f183
--- /dev/null
+++ b/feature-group-definitions/user-pseudos.dist.yml
@@ -0,0 +1,19 @@
+# Generated from: user-pseudos.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: ":user-valid and :user-invalid"
+spec: https://drafts.csswg.org/selectors-4/#user-pseudos
+status:
+  baseline: low
+  baseline_low_date: 2023-11-02
+  support:
+    chrome: "119"
+    chrome_android: "119"
+    edge: "119"
+    firefox: "88"
+    firefox_android: "88"
+    safari: "16.5"
+    safari_ios: "16.5"
+compat_features:
+  - css.selectors.user-invalid
+  - css.selectors.user-valid