Site: nolo.com
... illustrious artists, scientists, educators and businessmen (O-1); to specialized knowledge workers (E-1, E-2, ... L-1B), professionals (H-1B, E-3, TN), and multinational executives (L-1A), to religious workers (R-1 ... ), athletes, entertainers, and cultural exchange participants (P-1, P-2, P-3, Q-1). ...