I think I tend to parse that same distinction, Ailsa. There is something with the way that people present themselves.
I am generally either photographing what I know or touring the world of everybody else. There is something to be said for both approaches but I have to say that the more prsonal, then the more better for me if everything else... quality, high interest, character, quirk factor, etc. is there.
Other favorites in the sociological voyeur genre... maybe Debbie Fleming Caffrey, Birnie Imes, Nicholas Nixon, Shelby Lee Adams. Love them all though. And there are varying degrees of intimacy for these guys but I don't know enough about specific images to say.