None of the people identified so far are "players" in the game, just low-level staffers who were sent to take notes and show the flag. The real lobbyists do not go to hearings, they make phone calls and do lunch and social events. To place this in a context that people here might understand, if these photos had been taken at a random internet conference then you would be seeing associates or EIRs of a VC firm and not general partners.