9, 10, & 11. George Clooney, Rande Gerber, & Mike Meldman — Cofounders of Casamigos

Friends George Clooney, Rande Gerber, and Mike Meldman founded Casamigos tequila by accident in 2013 while hanging out at their homes in Mexico.

In June 2017, after turning it into the fastest-selling tequila in the world and changing perceptions of the spirit from a shot for party-goers to a civilized sipping drink, they sold it to Diageo for $1 billion.

They told Business Insider that since then, they remain as involved as ever — they even launched a mezcal last year — but just have "money to do things we couldn't before" with sales doubling since Diageo came on board.

Read more: The $1 billion sale of George Clooney's tequila company just made him 2018's highest-paid actor — here's the story of how the brand was set up by accident