As for appearance... Well, all of that is roughly accurate, but genealogy doesn't say much; it doesn't give you refined features on its own.
I disagree about manners and clothing; that doesn't relate to aristocratic appearance, but rather to aristocratic spirit. Anyone can behave properly and dress well if they want to, and perhaps they should want to. We're not pigs; we need to somehow live up to human standards, but it's mainly internal, although external appearance matters too.