Those are all on the exterior of LGW North Terminal. You forgot Bloc and Yotelair, both actually within the South Terminal.
I left a bunch of hotels off my list in that post because I stuck to only listing hotels where I've been that met the following conditions: they were either in the terminal or otherwise no more than a 5-minute walk outdoors from the arrival/departure passenger terminal buildings and would be easy to use a stroller to get a child + luggage from the hotel to airline check-in without using any cars/shuttle vans/buses or any fare-due train/tram/bus.