Since desktop mode is basically just KDE but without the ability to install software packages you could try Fedora.

They do a version just like desktop mode that has you install everything through the store, or you can get the regular variety to get a bit more flexibility.

Personally I’d steer clear of anything special as your first Linux install. Go with standard Fedora, then you can experiment and branch out if you’re interested, but you don’t have to if you like what you’ve got.