My vote goes to KDE Neon. Or Pop OS but I really like Neon! I tried using Manjaro with KDE for a few months but it's just nowhere near as simple as Debian based distros. Never realized how convenient .deb packages were until I couldn't use them lol
I did for a while and I got some stuff to run pretty easily! I actually really liked the way pamac and pacman work but then I started getting a bunch of errors about a corrupt database. I found a way to fix it for pacman but pamac was still broken and I could not for the life of me figure out how to fix it so I took the noob route and ran back to Debian lol