I would only ever use the KJV as a last resort. The KJV and its derivatives are the only translations that use that word...."godhead".
"Theotēs" is translated as "divine nature" in many other Bibles, so we have no issue with Christ's divine nature, nor with his divine authority....we just don't believe that he would be guilty of blasphemy by saying he was "God incarnate" to his fellow Jews. They wanted to stone him for claiming to be God's son! (John 10:31-36)
There is no such thing as a "godhead" because there is no such thing as a trinity. There is not one direct statement from either God (Yahweh) or his son (Jesus Christ) that they share equality in any way.....or that there are three gods in one head. Please provide one....I didn't see a single one from God or Christ in your many quotations.
You literally have to force the idea into the scriptures you use to promote it. I don't have to be talked into a trinity because I plainly see that Christ never taught it, and neither did his apostles. They knew who their God was....and it wasn't Jesus. (1 Corinthians 8:5-6)
the term Godhead means in the English language, "divine nature or essence", which is exactly what the Greek "θειότης", means.
There is no escaping that fact, that the Bible, in both the Old and New Testaments, does Teach that the Being of God, is THREE Distinct Persons. They have been revealed to us as The Father, The Son and The Holy Spirit. Not three Gods, but One God in Three Persons. This is the best and only way for us to understand the God of the Holy Bible. You might not understand or agree with this, but it does not make it wrong.