On one hand you have a well respected Harari scholar who had access to all the manuscripts inside the old Harari libraries as well as producing his own works for several European institutions on their request throughout the 20th century mentioning the Imam as Hawiye and giving 8 abtirsi of his.
The Harla that people love to claim were themselves considered to be Somali according to the Amhara scholar Mekuria. This guy is studied by the Amhara students in Universities and he thoroughly studied the old Amhara chronicles and the Amhara fought the Harla so why would he mention them as Somalis?
Also you can be Harari and Somali.
Richard Burton noted this almost 2 centuries ago
Also many of the Harari people have abong (Abun) and Adash (as their clan patriarch who are clearly Karanle subtribes and towns
Also where were the Malassay and Harla when the Amhara invaded Harar? All I see is Somalis defending it. Amir abdullahi of Harar himself fled to Babili.