I really don't know, since Rev. Dr. Mebratu does not mention them by name. He just says there are a few that are like that. I don't know if you watched the video, but he states that there are 5 foreign anaphoras borrowed from the Copts and the Syrians (and even some that share the same name as those aren't the same in Ethiopian usage; e.g., the Ethiopian Anaphora of St. Gregory is not the same as the Coptic Anaphora of St. Gregory), and 15 that are indigenous/Ethiopian. So odds are they are Ethiopian, but I don't know.