There's an Nvidia branch of Bazzite, and it works great. I'm even surprisingly able to play Star Citizen, which is notoriously finicky.
I heard though Valve is working closely with nvidia to get steamos working, so I am holding for that one instead
SteamOS/Bazzite/uBlue project are Linux distros with immutable core. The immutable part is tweaked, tested, fixed in time and can be easily switched/rolled back. Many people (me included) find it much nicer experience to get some battery included base that someone more competent put together and that can't be easily broken. So instead of figuring out how to put linux parts together you find immutable distro that fits most of what you need and then install just what is missing.