Meta Quest completely dominates the VR market so I think only their controller layout matters at this point. ChimeraX still handles the old Vive controller layout too. Windows Mixed Reality has been abandoned by Microsoft and is less than 5% of the Steam market share and declining. Valve Index headsets are about 15% of market share but also declining.
I think unless other VR companies introduce different controllers we do not need further ChimeraX support for non-Quest controllers.