no, oromos were historically called Gaal by the somali? which Bantus or other Ethiopians did the somalis border none, the only tribes the Somali border are Oromo, and Afar and have no contact with other peoples. so these Gaal maadows were oromos since the Afar were up north, and the Ajuran had fought the Gaal meadow.Somalis called everyone Gaal meadow back then. Bantus to ethiopians. If you wasnt Muslim. It's just black pagan/infidel.
Ofc Greeks didn't visit. You think herodotus went to Somalia and called it macrobia? The whole book is literally herodotus writing about second or even third hand accounts. He literally wrote that people in central africa had 3 heads.
What you are describing is not Azania. That is called the swahili coast. Azania is a name given to the culture of south cushites who lived in the great lakes region. It's literally in the book I showed you