H-1B: Specialty occupation visa.
L-1: Intra-company transfer visa.
O-1: Extraordinary ability visa.
J-1: Exchange visitor visa.
H-2A: Temporary ag worker visa.
H-2B: Temporary non-ag worker visa.
R-1: Religious worker visa.
EB-1: Extraordinary ability, outstanding professors/researchers, multinational managers/execs.
EB-2: Advanced degree/exceptional ability visa.
EB-3: Skilled worker/professional visa.
EB-4: Special immigrant visa.
EB-5: Investor visa.