Zack O'Malley Greenburg is a Forbes staff writer and author of the Jay-Z unofficial biography Empire State Of Mind: How Jay-Z went from street corner to corner office.; he’s now writing his second book, Michael Jackson, Inc, for Simon & Schuster. Zack pens The Beat Report at Forbes, where he’s worked for the past five years, profiling personalities from Richard Branson to Justin Bieber along the way. He also created the much talked about Cash Kings column on Hip Hop’s top earners of the year.
Here’s who hasn’t made it to the list so far but could surprise everyone soon: