VSCodium has that too: Ctrl/Cmd-P for “find anything”, Ctrl/Cmd-Shift-P (or F1) for “what the IDE can do for you”. Two different modes instead of one for both, but either way it's pretty neat, I agree.

I think the only other piece of software I've seen this function in was some open source CAD software (can't remember from the top of my head), which had it mapped to the spacebar. Perhaps that should work for stuff like graphic or video editors, too.