I use Aurora, done by the same guys who make Bazzite (de facto PC gaming distro) Aurora is immutable, a flavor of Fedora, meant as a general purpose workstation. It comes with KDE, but UniversalBlue has some distros with other DE's built in, as your post suggests you don't like KDE
I had tried Manjaro before that, but I kept messing up the network drivers somehow. Thus, I looked for immutable distros that are harder for me to break. If you're not as reckless as me, Manjaro might do you good?