Labwc is kind of openboxish https://github.com/labwc/labwc
There are modern minimal Wayland stacking window managers if that's what you are requesting.
Have you looked at
Labwc https://github.com/labwc/labwc
Or
Hikari https://hub.darcs.net/raichoo/hikari
And nwg-shell to give the no frills panels that you want.
https://github.com/labwc/labwc is one I've seen. I don't use these myself, so I can't speak for the quality or anything.