Higher IQs are correlated with higher incomes, too: https://www.sciencedaily.com/releases/2023/02/230208125113.h...
Anecdata source of one - but most of my friends from college who could've ended up with many many women ended up with women that had super rich parents, and most of the women that everyone was crazy about ended up with men with rich parents.
None of them claim to have married for money - but from the outside - the odds seem to be that at least some of them probably did.