[Beer and Pizza]

Let me make my first politics post answering this easy question.

No one on the list can be considered the champion of the underclass. They all have personal aggrandizement motives mixed in with what ever altruistic motives they may have. It is more about raising money or gaining personal political power.

Bill Cosby is probably the closest to a true champion of those on your list, but for him it is a part time thing.