two interesting unity tools for profiling you might not know about:

the Profile Analyzer can take profiler data and sort by costly frames, or look at the median frame, or filter frames and threads, or, and check this out, compare two different profiler runs! https://docs.unity3d.com/Packages/[email protected]/manual/index.html

the Performance Testing Extension runs repeatable executions of code or game across different platforms, and dump out simple profile data. even includes a viewer for comparing runs. can easily imagine a tool running perf regressions on a CI server https://docs.unity3d.com/Packages/[email protected]/manual/index.html

...both of these are packages, and compatible with multiple versions of unity. it's pretty cool to see specialist (internal?) tools like this made available with minimal fuss.

(This was my attempt at an informative @LotteMakesStuff-style thread but oh god it’s hard and I chickened out after three tweets. Anyway, their docs are pretty good)