Glad you put 1950 onwards otherwise there would be a lot more in the list
I was just about to add Manston but I saw it in the updated list. I though Marham was used or was it just allocated at one point? I'm pretty sure I had a list from 1948, or was it on AiX? I would suggest 1948 as the start of the post war USAF.
Edit: I also have Sandtoft in my head but am still looking for that list, assuming I had it in the first place!