Either the O-1 or the IEPP (or an E-2 if he or she is from a country with a treaty of commerce and trade with the US). Also, an H-1B could work but really only

Either the O-1 or the IEPP (or an E-2 if he or she is from a country with a treaty of commerce and trade with the US). Also, an H-1B could work but really only where there are other founders such that this person's ownership interest would be less than 50% and no higher than any other founder/owner.