How do you classify a K1 Fiancé(e) Visa? Is it a Nonimmigrant or an Immigrant Visa?

The K1 Fiancé(e) Visa is defined by USCIS as: The K-visa categories for fiancé(e)s of U.S. citizens and their accompanying minor children (K-1 and K-2 visas) were created to speed up the immigration process for such individuals so they could travel more quickly to the United States. By allowing a fiancé(e) and his/her accompanying minor…