6. JOHNELLE HUNT

$4.1 billion  SOURCE: Trucking AGE: 89 • RESIDENCE: Fayetteville, AR SELF-MADE SCORE:  Hunt gave $5 million to a 61-acre nature center bearing her family’s name that opened in December in her native Arkansas. The state’s richest woman, Hunt owns 17% of J.B. Hunt Transport Services, the $9.6 billion (2020 revenue) trucking company she cofounded in 1969 with her late husband, J.B. (d. 2006).