Allah is the name of al-Dhat al-Qudsiyya (Ruhullah), so we can say that in the beginning there was al-Dhat al-Qudsiyya and its name (Allah). In Hebrew they say that in the beginning was HaQodesh and its name (HaShem). In Christianity they say that in the beginning there was Theos and its name (TonTheon).
The reason this thread exists, I think, is because to Christians, Theos is clearly begetter and begotten, while in Tawheed, TonTheon/HaShem/Allah is neither begetter nor begotten.
Whereas, The Ruhullah is Begetter and Begotten, it is not Allah. So clearly the Christian Theos that they pray to is Ruhullah, while they have stopped recognising the importance of TonThon/Allah/HaShem outside of the prayer where they say "Hallowed be Thy Name".
So we all believe in the same things, but different emphasis is placed upon name vs essence in the different branches of Noah's religion.
But we must not confound the two. The Name does not have a son, while The Essence is certainly in each of us Inshallah.
(at the very least, this is the sabi perspective)
Does this not settle the matter?