Rick Rubin — The Beard Who Reinvented Every Genre

Rick Rubin co-founded Def Jam Records in his NYU dorm room and produced the Beastie Boys' Licensed to Ill, then pivoted to create classic records across hip-hop, country, metal, alternative rock, and pop—a genre-spanning achievement that outperforms #4's focus on hip-hop alone. His discography includes Johnny Cash's American Recordings, Red Hot Chili Peppers' Blood Sugar Sex Magik, Jay-Z's 99 Problems, Adele's 21, and Metallica's Death Magnetic, with a net worth of $250 million. His production style of "subtraction"—stripping everything away until the essential remains—yielded a maximalist impact across 40 years, making the barefoot, bearded minimalist the most versatile producer in history.