Yes, as far as I know, Corsair Armada is the only maker ever to have modeled CV-7. Revell, of course, had a kit of her Essex-class successor, CV-18, as the Mercury or Gemini recovery ship, but not the earlier Wasp. That may have be the same mold as their kits of the Intrepid and the Franklin, too.
I think Revell also did the later Ranger from the Forrestal class, too, but again, I don't think anyone else but CA has ever kitted CV-4. I forget who has the Langley kit, but I've seen it on some dealers' tables at recent shows.