@Xareen
My apologies, walaalkiis. I was pretty absurdly sleep deprived last night and not thinking straight. I got several of the dates weirdly mixed up.
Meroitic is far too late of course to be anything we were associated with as I pointed out last night given that Somalis' ancestors would have been along the Somali coast by at least ~200 BCE.
~300 BCE is Meroitic's earliest attestation and its presence probably predates that by at least a few hundred years since before that Nubians were utilizing AE for writing and keeping their own language a spoken one. I personally think Meroitic is to be associated with the whole of the Kushite Period but who knows. Is it Cushitic? Maybe. Wouldn't be surprised if not. Like I said, the very small number of words we do have appear Cushitic but it's entirely possible they're just hold overs from the era prior and they were NS speakers like the later Nobiin who usurped them.
I think you are in fact on the money and the Nile Cushitic / EC presence is to be associated with cultures such as the C-Group, Pan-Grave and Kerma. In fact, I'd say these cultures' timelines like up the best because whenever I run models all the post-Neolithic MENA in Somalis and other Horners seems very much Yemeni-related and not Ancient Egyptian meaning our ancestors were, if they still were, experiencing gene flow from Egypt at a time prior to it becoming significantly Iran-Chalcolithic admixed which mostly dates to around Middle and New Kingdoms:
And given that Egypt only begins to conquer and possibly colonize Nubia during the New Kingdom, the dates line-up too well with when the C-Group, Pan-Grave and Kerma periods all conclude at around 1500 BCE. And it's between this time and before it that evidence of a presence in Nubia shows itself like our E-Z813 (~2300 BCE), cultural influences from Egypt like FGM (~1900 BCE) and the supposed substrate in AE (pre-3000 BCE).
I think by the Kushite Period all the ECs who are in the Horn now's ancestors were probably gone. If Meroitic or anything along the Nile, Eastern Desert and red sea hills was EC after 1500-1000 BCE, then these are now extinct groups we most likely have no ancestral links to. That's my current thinking anyway.
The final needed piece of the puzzle is having a firm understanding of the timing for East-Cushitic diversification like when LEC and HEC formed as distinct subbranches so that we understand the time-frame for HEC to have possibly been along the Nile. Ehret told me ages ago that EC unity goes back to about 2000 BCE. I think Somali-Oromo unity by 1000 BCE (not sure on this one and if I'm misremembering) and if that's true then it doesn't, for now, shake things up too much as it means HEC formed sometime between 1000 BCE and 2000 BCE, right in the middle of that general C-Group, Kerma and Pan-Grave time-period.