Employment Based Immigration USA
a.) Employment Based Immigration USA: Employment First Preference

Persons with extraordinary ability
Outstanding professors and researchers
Managers and executives in multinational companies

b.) Employment Based Immigration USA: Employment Second Preference

Professionals with advanced degrees
Persons with exceptional ability
Exceptional professors and researchers

c.) Employment Based Immigration USA: Employment Second Preference with National Interest Waiver (NIW)

Persons with exceptional ability involved in activities […]

a.) Family Based Immigration: Relatives of U.S. Citizens

Spouse
Unmarried child (under the age of 21)
Unmarried stepchild (under the age of 21)
Adopted child (under the age of 18) or
Parent or stepparent
Unmarried son or daughter (over the age of 21)
Married son or daughter (any age)
Brother or Sister

b.) Family Based Immigration: Relatives of Green Card holders

Spouse
Unmarried child (under the […]