I often mention my SO's TG support group in FAB and elsewhere in this forum, since it is a TG group; there is a healthy mix of TS, CD, and no doubt TS Questioning.
When I refer to the membership as a whole, I use "TG". If I refer to someone's husband in particular, I use either CD or TS (some of our FABs are married to TSs). I've not heard a GG quibble about the terms. I'm pretty sure that most GGs understand that TG is an umbrella term, once they begin to learn about all of this. I refer to my own SO as a CD or dualgender, or transgender, depending on the context and the person's depth of understanding.