I would have to go XFCE. It is just a good work horse de. Easily set it up to meet your needs. My only misgiving is that lately I can't seem to get the XFCE sensors to work on start up.
I also like Enlightenment for it's small overhead. I've run into small issues every time I've used it though (like the XFCE sensors not working at start up).
Plasma is nice - is stripped down like in Kubuntu 18.04.3 - fairly small overhead.
Now I go off the deep end with Fluxbox and ICEwm.
Mate is okay if done well. Lxde was okay. I don't get lxqt as it seems to take more overhead than lxde.
Unpopular on this - probably: don't like gnome.

, i love those eye candy colors in it.

