Sway can more or less do it, and I've switched from XMonad to Sway but configured similar to XMonad's default method of operation.

I haven't managed to get it quite right though. For example Sway doesn't seem to be willing to move a workspace to a different monitor if it is empty.

Yeah, I switched from XMonad (which I used for over a decade) to Sway a few years back. Spent some time trying to duplicate the XMonad behaviour but eventually just realized that spending a few hours getting used to the Sway approach and slightly changing my workflow was a lot easier.