We only tested AI docking with default Traffic and Ultimate Traffic Live, to cover both cases of traffic created with a .BGL schedule and traffic created programmatically with Simconnect, and they surely both work.
There's no reason why any other traffic wouldn't work and I doubt ALL models won't work, I'd said it's probably an issue with some specific models, perhaps they have their exists specified in a way that it's enough for the GSX jetway not to solve so, you might try if another GSX jetway model would work better.