Hitler had ordinary relationships with a number of people contrary to myth, as did Stalin. The historian, Ellie Cawthorne, points out he was politically psychopathic but there is no evidence he was clinically psychopathic.
I have long queried the diagnosis over a number of years and the very concept, which is popularly accepted. One problem is, we know nothing of people conceived of as psychopathic and usually know only their behaviour at some point or other. Stereotypes of the condition are well known-such as Hannibal Lecter. I also suggest that such categorising does not really help us understand human nature but distract from developing our understanding. Such understanding is one dimensional.
The concept tends to separate apparently violent individuals from the rest of us. We are not violent they are. They are a special kind of human being called psychopaths-the direct opposite indeed of seers and saints. But people are made up of many things. Saints were and are saints only for part of the time. .