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Cardinal: Fastest and most accurate file search app for macOS. https://github.com/cardisoft/cardinal

It's slower to start-up than Everything but just as useful once running.

There are a few Mac oddities like OneDrive files appearing twice because macOS is convinced they exist in two locations, but that's a minor annoyance.

As sibling notes, you can use locate just like the patriarchs (once you do some osx-specific fiddling)

https://egeek.me/2020/04/18/enabling-locate-on-osx/

It's not a gui, but in case you hadn't heard of it before: unixes usually have a `locate` command that'll do ~instant file/folder name searches. The index is usually rebuilt via a cron job though, it's not always up to date like Windows can do.