Thank you for the link, I'll read it.

I do not dispute the typings of Stalin or Saddam Hussein as ISTj, so I don't really see the point of that part of the argument; what I do dispute is the implication that Caligula had the same kind of motivations, in fact, there is no parallel at all between the rises of Stalin and Caligula to power.

Mao and Mobutu are more complicated.