Looking for a normie KDE distro that works out of the box and is stable without issues.
Rolling release: openSUSE Tumbleweed Semi-annual release: Fedora KDE Spin LTS: Kubuntu (3 years), Debian (5 years), AlmaLinux (10 years)
I personally think semi-annual is where it’s at. You get packages that are mostly up-to-date (and with Flatpak user-facing software is up-to-date anyway), and you don’t have to fear that something will break/be incompatible with every small update.
I’m running TW and it’s great. If you don’t want a rolling release, OpenSUSE created Slowroll, that is supposed to release major updates every one or two months, which would probably be my go to if I were to start over.
Slowroll is experimental and it’s still a rolling release that tracks tumbleweed. It might be less maintenance, but not necessarily more stable in terms of bugs. I’ve seen some people report pretty major issues with it in the last couple months.
Leap is the version you want if stability is your priority. You can even get the tumbleweed nvidia driver if you have an Nvidia card and want the latest driver. The only os I’ve used that was more stable than leap was debian. But Leap is much more flexible than Debian.
I wasn’t sure about the state of Slowroll. In terms of stability, Tumbleweed ist absolutely fine. It’s the less frequent, but not super low frequent update cycle that’s interesting to me. I could always just ignore updates on TW, but I’ve got the urge to run the updates if there are any.