Apollo
VIP
I don't understand what you mean when you say 'Omotic'. I always thought it was a language group. Are they a distinct ethnicity? Why do they look like nilotics if they are Afro-Asiatic speakers? And why are we the only ones in the HOA who haven't mixed with them?
They are an ethno-racial group, not just a linguistic group, and have many of their own genetic lineages and autosomal characteristics. They may look a bit like Nilotes, but are quite unrelated to them.