Instead of Maxx Desktop, check EMWM plus the goodies:

https://fastestcode.org/emwm.html

I won't consider XFCE vintage but sane, boring but working. Vintage would be a vanilla FVWM, or MWM, or TWM/CTWM. But not so much, as things come full circle.

EvilWM would look outdated and crappy under Slashdot threads in 2001 or close, because it looked something from the 80's, altough some bright users stated that it saved tons of RAM for applications.

Its clone CWM nowadays it's highly praised by OpenBSD users as a no-bullshit, floating-no tiling madness window manager (and by me too). It works, it can work without any mouse for every window action (even resizing), it doesn't need dmenu, you can use virtual desktops and search between opened windows with autocompletion. So, forget about RSI's, your hands can literally rest.