In JFK it lists runways...then GATE 101--RAMP GA..numbered and the GATE 220--RAMP GA/ then later Parking etc..mostly GA and Cargo. I know kennedy has 8 terminals and each has designation like Terminal 1- G01 etc then Terminal 3 01,02 etc.. Maybe making something of nothing but just wanted to have the right stuff.
You DO have the right stuff. When you say "In JFK it lists runways..." I assume you mean the default FSX Go To Airport menu. That menu is very limited as far as naming conventions, so you CANNOT have a terminal realistically named as in JFK, because the definitions there are hard-coded in the program, and it simply cannot accept something like Terminal 1 Gate 2, it would appear like "102" in the default menu. Also, the type is all GA, in order to get rid of the default ground vehicles.
This would be a problem for every scenery out there but, fortunately, we have GSX, which allows to override the default parking naming system, and use its own, which is more powerful.
So, if you use the GSX parking selection menu, with the "Just warp me there" option, you can see the terminals named realistically, and replace the default "Go To airport" menu, which you can use to just go there, for example on the active runway, then use GSX to move to the parking.