Barack Obama is an American attorney and politician who served as the 44th president of the United States.
Bill Gates is an American business magnate, software developer, investor, and philanthropist.
Noam Chomsky is an American linguist, philosopher, cognitive scientist, historian, social critic, and political activist.
Warren Buffett is the chairman and CEO of Berkshire Hathaway.
Richard Branson is a British business magnate, investor, author and philanthropist.