Why are CG FEET and CG FEET LATERAL only available for Helicopters? Airplanes also have a CG too, right?
Not sure why helicopters differ in that regard, but specific to your question, yes, the aircraft have a three-dimensional CG that can be affected in three dimensions.
empty_weight_CG_position has x, y, and z coordinates, which are all affected by the same type of coords of the designated stations on the aircraft.
empty_weight_CG_position would also be useful but as far as I know, just like most data in the cfg files, it isn’t accessible from WASM, SimConnect or JS.