I don't know if anybody has tried to really analyze his works. Probably, but I've never looked. I wouldn't be curious enough to read it if anybody had. I don't read his books to gain any kind insight into anything, although some things he's written have really made me think, like just how nasty an out-of-control government can become, in Firestarter.
Desperation and The Stand aside, what is your favorite King novel (if I may ask)? This question is from pure curiosity. I have asked Christian King fans in the past which is their favorite novels, and I just file the answer away as a data point, nothing more.