Hmm. I have xfce4/wm and I can move windows around (after mapping keys) with Win (oops) Meta + arrow keys and some Shift & Ctrl combinations.
Or are we talking about moving then around with the arrow keys instead of grabbing them by the title bar or something instead of tiling and moving them between monitors and workspaces?
Yeah. I have it keyed to shift+meta+arrow keys iirc. Works for moving them up and down too. I’m phone posting, but I can look it up later if you want.