John D. Rockefeller

Reported IQ: 140*

Profession: Oil Tycoon

Net Worth: $418 billion* (adjusted for inflation)

John D. Rockefeller, America’s potential richest figure, transformed the oil industry with the Standard Oil Company in the 1850s. Despite its breakup due to antitrust laws, its offspring companies like Exxon and Chevron surpassed Standard Oil’s value.

Whether Rockefeller took an IQ test remains unresolved, as it was invented post-1905. Nonetheless, his remarkable intellect is widely acknowledged for revolutionizing American wealth, contributing to the renowned Rockefeller name in educational institutions.