Yes they have families and dogs. But it's pretty much one group of people who are on corporate boards, in high-level appointed government positions, and working as lobbyists. Each person may rotate among all these areas, and most of them came up through the same prep schools and Ivy Leagues. These people have a
lot of political influence.
For details, see the famous book Who Rules America, written by a sociologist who did a census of the people in all these positions and analyzed the results. Five or six editions have come out by now as he's continued his research and updated the results.
(Most elected politicians, meanwhile, just want to stay out of trouble and get reelected with minimum fuss, whatever that takes. Fortunately that gives grassroots organizations a way to pressure them.)