I initially thought your “AMDB” airports were any and all airports where e.g. taxiways and parking stands are indicated when zooming into “airport view”.
I was looking at this thread:
Both LPMA and ENVA (or Tenerife North GCXO) do seem to have the information I originally expected:
But then looking at bigger airports like Tenerife South GCTS or London Heathrow, I did notice some “extra” detail, so I guess those two would be considered “AMDB” airports whereas the others are not?
I imagine a list would be interesting, if only out of curiosity 
It looks like basically any airport that features information about Gates in NG Charts’ Networks section is a “high-detail” AMDB airport, is this correct?
Regards,
Tim