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.
Warren Buffett is the chairman and CEO of Berkshire Hathaway.
Hillary Clinton is an American politician, diplomat, lawyer, writer, and public speaker.
J.K. Rowling is a British author, film producer, television producer, screenwriter, and philanthropist.