Sports stars Roger Federer, Cristiano Ronaldo and Lionel Messi rounded out the top five, with earnings of $150 million, $149 million and $147 million respectively.
In sixth spot was actor-and-director Tyler Perry – who has used his vast fortune to pay for groceries and meals for those in need, as well as funeral and other expenses for the families of George Floyd, Rayshard Brooks and Secoria Turner this year – with earnings of $137 million, while another soccer player, Neymar, saw his $135 million earnings land him seventh place.
DJ Howard Stern was eighth with $127 million, one place ahead of LeBron James with $125 million.
Dwayne 'The Rock' Johnson completed the top 10 with $124 million.
Elsewhere on the list, Travis Scott, the father of Kylie's two-year-old daughter Stormi, appeared at number 82 with 2020 earnings of $56 million.
Notable showbiz names in the top 20 included 12th-placed Ellen DeGeneres with $119 million, Ariana Grande at 17 with $101 million, Ryan Reynolds at 18 with $100 million and the Jonas Brothers, whose $97 million earnings awarded them the 20th spot.
Forbes' latest list comes months after Kylie made the financial bible's annual World Billionaires list for the second year in a row.