I might have got confused. Lol
It could be that Somalis as they expanded West, picked up some of the culture of neighboring populations.
The presence of Afar-Saho cognates in Northern Somali and their absence in Maay , Rendille ,has a more profound linguistic explanation.Some linguistic experts interpret this to mean Af-Maxa tiri speakers (after they split off from Af Maay)were in contact with some kind of now-extinct Afar-Saho like speakers in Somalia .The implication of this is that Northern Somalia could have once been settled by some kind of Afar-Saho like group before the Somali expansion.
We know from Somali folklore the Gabooye hunter gatherers and the Yibir were at one point dominant in the Nothern territories.Their kingdom was supposedly called Dhaami-not sure if this is linked to Ethiopian kingdom of Damot.
Some minorities in Somaliland claim to speak their own languages,but the linguistic experts who studied them deem it to be a form of Somali with more slang.What we don’t know is if the likes of Gabooye/Midgaan are also Somali cushites who were ostracised for adopting hunter gathering or ate certain meats due to increased aridity and drought in Northern Somalia.They don’t look any different to the average Somali in my opinion,though DNA testing may suggest otherwise.
There might have also existed some kind of Soqotri or Sabaen settlers in Northern Somalia possibly explaining the presence of J in Warsengali.Amun is your DNA aficionadio.......
Will return to the Borana/Rendille tomorrow......