There are distributions with a great Steam experience out of the box? It’s SteamOS actually a good choice? Maybe isn’t what you use or prefer.
A good Steam distro for me has a very mininal procedure for perfectly working controllers, client and general user experience.
Your direct test and experience are very appreciated.
I tried Nobara and really liked it. Some games didn’t like my the hybrid graphics on my laptop tho and I ended up swapping to Pop. But I actually like Nobara better than Pop and would be using it if I could.