I’ve been running Cachy for a few months - it just works.

I picked it because it appeared to be easy to install Arch (which I’ve run before, btw) with sane defaults.
But that’s exactly what Endeavour is from what I just read.
I don’t know if the purported optimisations provide any real world benefit, but the major reason I went Cachy is it being the flavour of the month.
For the time being, it’s where a lot of focus is for new development in the gaming space.