Charles Butt, $10 billion
Butt is heir to the H-E-B Supermarket chain that is popular in the south. He's been named #5 Top CEO by Advisory Cloud. He also received the Aguila Azteca Medal. H-E-B has been around since 1971 and is based in San Antonio.
Nicole Mellon, $1 billion
Nicole was married to Matthew Mellon, making her an heiress to the Mellon family fortune. However, her story is no fairytale. Their marriage quickly—and publicly—deteriorated. Unfortunately, Matthew passed away in a plane crash in 2015 before they could divorce, making her the heiress to his billions.