there's:

• KDE neon (sorta dodgy but always has the newest KDE release on top of ubuntu)
• Kubuntu (KDE on ubuntu but a bit old)
• Debian+KDE (KDE but a good few months old)

I wouldn't recommend manjaro, they're very dodgy

Opensuse is pretty good, iirc they have a GUI for most configuration items and you get the newest packages for everything. it's like easier arch