Gnome, extensions make it your way, on touchscreen I like arcmenu with a grid layout, and my dash on the left, always visible and large, easy to tap. I did not like kde with touchscreen, gnome is pretty much setup for it as is and you don't need extensions, just makes It nicer.

Gnome control center is great, standard for touch devices, so you're already used to it. Everythings a bit big and minimal while kde always has more going on on the page and is ideal for mouse use imo.