Barack Obama is a politician, he was the first African American president of the United States, and he was the 44th President of the United States from 2009 to 2017. Most of Obama's wealth came from his presidency and from his book deals.
Ray Dalio is the founder of Bridgewater Associates, and he is a billionaire hedge fund manager and philanthropist.
Gaga is an artist and since she propelled onto the music scene in 2008, she has discharged five studio collections, four of which set No. 1 on the Billboard Hot 100 and a number 1-selling soundtrack collection for "A Star Is Born." Aside from making a fortune in deals, Gaga is additionally a musician, or co-lyricist, on a large portion of her music, which gives her standard sovereignties from music plays and use as stated by Fox Business.