I’m curious about which distros are working well with Plasma, as I had some trouble with stability in the past. I have the feeling Plasma works better with rolling release.
I use CachyOS in my ThinkPad and in my Framework Desktop, for work. A stellar OS, has great defaults, is very fast and prioritizes KDE although you can do other WMs too if you're adventurous.
KDE drops a new point release with new features ~ every four months, and has a more flexible release schedule, so it is just to just get the changes when they are released.
I'm currently running KDE on NixOS unstable which is great, but if I weren't doing that I'd still be on OpenSUSE Tumbleweed.