USICS Information on Employment-Based Immigration: First Preference EB-1:

https://www.uscis.gov/working-in-the-united-states/permanent-workers/employment-based-immigration-first-preference-eb-1

USICS Information on EB-1: Employment Based Immigration – Permanent Workers – Extraordinary Ability/Outstanding Professor or Researcher/Multinational Executive or Manager:

https://www.uscis.gov/forms/explore-my-options/eb-1-employment-based-immigration-permanent-workers-extraordinary-abilityoutstanding-professor-or