EB1-from Hooyou.com

A First Preference Immigration Petition (EB-1) is an employment-based petition for permanent residence reserved for those who are among the most able and accomplished in their respective fields within the arts, sciences, education, business, or sports. There are three (3) types of EB-1 petitions:
Alien of Extraordinary Ability EB-1(a)
Outstanding Researcher/Outstanding Professor EB-1(b)
Managers and Executive Transferees EB-1(c)