Simon Cowell – $600 Million

He may not be a singer or a songwriter, but Simon Cowell is one of the best-known figures in the music world. He is a producer and a record executive who has an eye for the best talents and discovered many talents. He has received attention for frequently making controversial comments that are harsh and frank to the contestants. He is the man behind the success of the United Kingdom boy bands, Five and Westlife.

With his knowledge and knack for exceptional talent, he came one of the most prominent judges of American Idol and The X Factor. He managed to bring a lot of artists into the spotlight. He is the manager of Il Divo, Leona Lewis, Fifth Harmony, and One Direction. Hence, it is no surprise that he has a $600-million net worth and will probably make more investments in new artists.