Self-subordination doesn't imply inferiorness in substance, that's why it's also necessary to distinguish if we are talking about the ontological, or about economical relationship of the Father and the Son.
You are misquoting authors the basically the same way the WTS did.
You quoted a couple of people who gave their own opinion, and as we can see, it was enough for me to find the Greek original of the references: no early Christian writer said "the Son is just an angel" or "the Son was made, he is a creature ", etc. The Holy Scriptures do not state this either, and as you can see, neither did the early Christian writers. How can you say that Christians before the Nicene Creed would have held a WTS Christology?
The Trinity is simply the summation and definition of the Scriptural statements that there is one God, but at the same time, as we can see, there is a plurality in it, since it declares about several persons being true God.
For the other position, the Arian definition, it is no coincidence that the falsification and deliberate mistranslation of the Holy Scriptures was necessary.
The Word is of course not God in the sense that he is the same person as God the Father, but he has the same quality (hence of the substance, has the fullness of deity), that's the Nicene definition. He is begotten from the Father before the aeons (which are also made through Him), and He is the eikon and kharakter of the Father's hypostasis. In Jesus, the fullness (pleroma) of "divinity" (theotes, not theiotes) resides bodily, not the fullness of the "divine quality", as the JWs falsely translated it.
The Philippians 2:6 is clearly mistranslated by the Arian Ulfias, and by the NWT. Existing in the morphē of God (has the Bible ever said that about any angel before?), and did not regard as "harpagmos" to BE (einai) equal (isa) with God. What does it mean not regarding/considering something as "harpagmos"? This expression can only be described as something that you cling to at all costs, by force, approx. as Gollum clings to the One Ring "my precious"). So he didn't cling, insist on his equality with God (which he already had), by continuing to stay in the morphē of God, BUT etc.
Ulfias rendered the part "equality with God" to be only "similar" with God. NWT is much worse, it completely distorts the meaing here.