Non-Immigrant Visa
B-1	Business Visitor
B-2	Pleasure Visitor (Tourist)
E-1	Treaty Traders
E-2	Treaty Investors
F-1	Student Visa
H-1B	Speciality Workers
H-2B	Skilled or Unskilled Non-Agricultural Workers
J-1	Exchange Visitor Visa
K-1	Fiance/Fiancee Visa
L-1A	Intracompany Transferees - Executives and Managers
L-1B	Intracompany Transferees - Specialized Knowledge
M-1	Vocational Student Visa
O-1	Persons of Extraordinary Ability
P-1	Athletes and Members of Entertainment Groups
Q-1	Participants in International Cultural Exchange Programs
R-1	Religious Workers
TN	NAFTA Business Visitors from Canada and Mexico

Employment based Immigrant Visa
An immigrant is a foreign national who has been authorized to live and work permanently in the United States. There are four categories for granting permanent residence to foreign nationals based upon employment:
EB-1: Priority workers
EB-2: Professionals with advanced degrees or persons with exceptional ability
EB-3: Skilled or professional workers
EB-4: Special Immigrants

Family based Immigrant Visa

If you want to immigrate to the U.S. through the family-based category, your relative who is either a U.S. Citizen or a Lawful Permanent Resident must sponsor you.