Regarding the suggestions of MIT/CM/Wash U/Emory as D3 schools with strong B programs – another layer to consider is that all of those schools other than MIT are in the UAA athletic conference. The UAA is a conference where coach support may for a recruit may not have much impact on the admissions decision, depending on the school or the sport.
Ways to expand the search might be to include schools with “pseudo” business majors, such as Dickinson and Denison which both have a major in international or global commerce. Or schools with strong ties to the financial district, if that is a priority, such as Trinity College, Hartford.