One for XFCE. A reasonble workflow with lots of customizability. Default is a Windows XP workflow, but with extensions you can emulate any desktop, including MATE. The XFCE apps are light and stable with poweruser features, while being reasonably easy to approach.

I literally daily drive btrfs. Just don’t use a crappy drive or use raid5/raid6.

just be careful and review what tab-suggest shows.

Garuda Linux. It’s like Manjaro, in fact some utilities are forked from it, but done right.

You can also try EndeavourOS.

If you’re into immutable distros, try Bazzite.

I use this icon pack. A very good GTK/Qt/Kvantum/whatever is Simplewaita. It goes together well with the icon pack.