From my reading and from my experience of self and others, this is what it seems to me:
We get one basic underlying structure, into which we can load any amount of parts of other disorders. And yeah, as Rap says, theres a lot of overlap.
Also, I know that one of the schiz things is having been invaded and taken over in the past, so we easitly get sort of loaded up with the others disowned stuff. So, my mum was narcissistic which means disowned shame, she was shameless, quite irresponsible about how she hurt people. Then I go loaded up with shame, shame about myself, and also about her.
I know someone who is also schiz and her mum is very borderlinish, and she also, I think has some borderline traits, and in a way I think she's better off than me, is more able to keep friendships than me, she seems much less lonely.
in the felllowship I used to be in s.one described it as 'the bottom plate', you'know if youve ever been in a cheap caf or a canteen, you take one plate off and the next is moved up under it by a sort of spriing! Well, that was time back, wayback.

I know what you mean about reading, when I first got here, I read and read.... eased off a bit now.

river.