4. MARIAN ILITCH

$4.3 billion

SOURCE: Little Caesars

AGE: 89 • RESIDENCE: Bingham Farms, MI

SELF-MADE SCORE: 9

Another record year for Little Caesars, the pizza chain Ilitch cofounded with her husband, Mike (d. 2017), in 1959; systemwide sales reached $4.8 billion in 2021, per Technomic, up from $4.5 billion. Ilitch’s Detroit Red Wings missed the NHL playoffs for the sixth straight season after having qualified 25 years in a row. She and her son Chris, who runs Ilitch Holdings, are partnering with billionaire developer Stephen Ross as lead donors of a $250 million University of Michigan research-and-education center in Detroit.