The quest headsets are able to track certain supported keyboards. I have tried it and it works very precisely, no touch typing skills needed. Most apps also let you work in AR mode, where you can see the keyboard through the cameras. However, the cameras are still grainy. The next gen headsets will have this solved.
I have not tried the XReals etc because of the small FOV. I do not like turning my head a lot while working. On physical displays, one also usually only looks around with their eyes instead of turning the head. However I think the lightness and portability of the XReals has no competition as of today.
From what i have been able to gather it seems the XReal Air 2 Pro is able to give you 3 screens for a really good experience. See https://www.xreal.com/air2/ and https://www.xreal.com/beam/