I desperately need something like Everything¹ for macOS!

¹https://www.voidtools.com/

Find Any File is solid, but it scans on demand, so it never quite feels like Everything. The closest I've found is Cling from lowtechguys: it keeps its own index of the whole disk, including the hidden files and app data Spotlight skips, and results show up as you type with fuzzy matching.