and a loose-fitting hat that covers his short, black, coiled hair.
His rich, dark brown skin almost seem to gleam gold in the sunlight
That’s F description. Coiled hair, rich dark brown skin, sounds black to me 
Then N is dark brown hair, dark brown eyes, tawny skin.
Then M is dark brown hair too, and deep tan skin. Also, Sera said in her tumblr that M accent “might be mediterranean, perhaps” .
Which makes me think… what do you think is M background? I am starting to picture him as north egyptian in the last period of Egypt as the old empire started dissapearing, and more towards the Greece occupation, when the last Pharaohs were greek and not Egyptian.