I’m not sure if it helps you to consider colleges without the array of typical undergraduate business offerings that you seek (however, they’ve been introduced on the thread), but note that the LACs that send the highest proportion of their graduates to highly regarded MBA programs (Amherst, Hamilton, Middlebury, Bates, Claremont McKenna and Pomona) do not offer a business major.
(Source: Top MBA Producer Schools – Infographic | College Transitions.)