The  better programmes  are  those where the person is genuinely  interested in whoever appears  in their tree, and not just the "moneyed" side if any.
There have been    quite  a  lot of  good ones in this respect, but others in which it has been  too obvious that the  poorer side of the family is better "airbrushed" out.Odd  really because both   sides contributed to MTWTA   (make them who they are)..like it or not