Indeed, his mother seemed to have been the prime factor in his isolation and sense of superiority.
His wife and kids apparently knew nothing about his crimes. Which isn’t too hard to believe. Reports are that he was a very controlling husband and father, so she wouldn’t have been able to ask questions even if she was suspicious.
Yes, the vast majority were female, though there were a few male victims.
As for the theft, there was the box of women’s jewelry — most of it not worth much — that was found in his home. Unfortunately, only one of the victims’ families was able to get their mother’s ring back, only because they had a picture of her with it on. The rest were too common to be identified. As well, several victims’ families noted that their mother/father would have just gotten their pension check, but it wouldn’t be found anywhere after their deaths. Very suspicious all around.
I haven’t heard of these categories, but if I had to take a stab at it (sorry), I’d put Shipman in the power/control seeker type. But I can’t say for sure.
Thanks for the great questions!