Everyone knows Walmart. But not everyone outside Wall Street and corporate America knows of its CEO, Doug McMillon, the same way they know of Tesla’s Elon Musk, Disney’s Bob Iger or JPMorgan Chase’s Jamie Dimon. Yet, McMillon’s impact on the American consumer over the past 12 years is arguably as big, if not bigger, than any of those three. With affordability top of mind from Main Street to Pennsylvania Avenue, he built on Walmart’s reputation for low prices while pushing the company to embrace