But by your own post above, you contradict yourself! In your first sentence, you correctly write the text as : "although in the form of God, emptied himself, not regarding equality with God as something to be prized."

 Then you write: "stating simply he emptied "himself," being no longer in the form (essence) of God. That does not easily fit onto the later theology of divine essences. " 
Do you see your mistake? You add the words "no longer" in the form of God, where the actual words are, although IN the form of God, emptied himself......

Paul does NOT say Jesus was NO longer in the form of God. You and all your theologians are misinterpreting it. It is most certainly not clear in Paul's writings that he thought Jesus was not God while on earth.