Reorganize results files

[jordandsullivan]

Is your feature request related to a problem? Please describe.
We need a way to distinguish between different results file types as we introduce new benchmarks while keeping a consistent format.

Describe the solution you'd like
I recommend adding a prefix and drying up the duplicate save functions across the various benchmark scripts.

Describe alternatives you've considered

Additional context
Add any other context or screenshots about the feature request here.