I am wondering if some of the things you've brought up are more applicable to 4w3 sx dom?
I can say that I've seen a pretty big difference between sx-doms and non-sx-doms in how they view the world/ themselves in the context of it.
I'm almost positive I'm a 4, and I'm almost positive I'm NOT a 4w5 (I do not have the research/academic tendencies w5's have). I think that I have the image consciousness of w3, and also more of the achievement/accomplishment/movement orientation. Being so-dom, though, I think I'm much much less diva-ish. I have my dramatic, very sensitive moments, but they're pretty much always in a 1:1 context, with intimates. Re. 'aristocrat' name for 4w3, I haven't read enough of the descriptions. But, again, think image consciousness, also value of my appearance, aesthetics, how I come across to people, perhaps some of the societal elements of achievement, ties into w3. Throw in some snobbery/ pickiness, maybe. High expectations of self, of 'accomplishing' things.