15. Simon Cowell

Known as one of the judges in the hit talent search, American Idol, Simon Cowell has gone through a lot to get to where he is now. Cowell took on minuscule jobs like working in the mail room or being a runner for a film. He later rose to prominence by starting careers for some of the world’s most renowned superstars. He is now known to be one of The 100 Most Influential People in the World.