At 28 . 9 billion dollars, Jacqueline Mars shows she deserves to make the list with her wealth forming through having the world’s largest candy-making company founded by her grandfather, Forbes.com explains. Working for the company for 20 years and serving as a board member (for many well-known companies) until 2016 she became a well-known philanthropist, she even changed the logo in 2020 on of the brands within the company.