The Unifit adpapter gets installed first.
Anything G-Max or PowerGravity from Toto will work fine. It may not be on the list, I put some representitive stuff on there.
The Carrollton uses the Unifit adapter, so that mounts first, then the toilet drops down. It the bowl needs shimming, shim the back, pinning the front down to the floor. Then tighten up the back nuts on their bolts.
I always like to sand where the tank bolts go down too.