I’m currently writing this on the MATE desktop. I started with linux on the gnome 2 desktop, so it only makes sense. A long time ago I used Xmonad (a tiling window manager) but tiling has less appeal for me now. If I need/want a lightweight solution, I use CWM (https://en.wikipedia.org/wiki/Cwm_(window_manager), which was originally developed on OpenBSD, but is usually available across different Linux distros and BSD’s.
I’ve tried pretty much every DE/WM under the sun at this point, and would be interested to know what you use and why
I’ve been on XFCE since around 2015, but since I’m doing more and more within the terminal and want a more keyboard-oriented workflow I’m thinking of switching to dwm.