OpenSuse has YAST and KDE plasma does a good job of gui configuration for itself it’s just that such options literally do not exist. The closest I could get was using plasma and a script that would update other panels to match the main one which is really janky. Gnome with dash to panel did a bit better with mirroring, but it started to wrap icons way way to early, and it didn’t seem changeable as it was an issue with how it works fundamentally.