Kahn
Cohen
Kagen (as in the Chafetz Chaim. It is an Eastern European way of saying Kohain)
Kaplan (for Ashkenazim. In Turkish Kaplan means “tiger”)
Rapaport/Rapoport (One of the most distinguished of priestly families. The Gra was “podeh” himself by every Kohain he met until he met a member of the Rapaport family. Supposedly they have a shtar yichus [family tree with all the names] going back to Aharon)
Shapiro (some, not all. I heard it has to do with the grandson of the Maharal who was last named Katz. He married a Shapiro and took her name because she had no brothers. Anyone else hear of this?)
Kahane (Aramaic for Kohain)
Kahana (variation)
Maguri, yemenite family with Shtar Yichus.