A constant list of possible location types — this may be:

• COORDS: a particular latitude / longitude (blurred until contact agreed)
• POLITY: a political or governmental entity, at any recognised level (Polity)
• BIOREG: a bioregional area, if we can agree a standard bioregional taxonomy
• a unit in a global fractal tiling, probably:
  • H3GEO: the hexagonal-based H3
• MYDEV: following a portable device that can be tracked
• NOWHERE, a special place indicating that geographic location is irrelevant to an enquiry

• LocID

If someone really wants to include what3words (which I do not endorse, as they are a commercial enterprise) then that will just map to COORDS. I work at /poach.defied.scratches and /interlude.race.halt

• location-info