I'm using jwm. 200kb binary, single xml configuration, mine look like gnome 2 with 10 virtual desktops. I like that my desktop layout haven't changed since 2008, no UX designer annoying me with new fad every 2 years. Screenshot: https://files.catbox.moe/t6qyve.png
I'm also using something very stable, since years and years (so long I don't remember): I'm using the tiling "Awesome VM". 13 virtual desktops. One (keyboard) modifier assigned only to the WM and not anything else. I'm always putting my regular apps on the same virtual desktops: work email on virtual desktop '1', throwaway browser on '9', Emacs on '3', shitloads of xterms and cpu/disk/network monitors and whatnots on '5', etc.
It's minimal in its appareance: one-pixel border around windows, a tiny "useless gap" between windows (but not near the monitor's physical borders for the monitor's physical borders do, IMO, act as the "gap").
