According to Scripture there are other gods. However, that isn't the only conclusion and is certainly isn't a logical one. There is no example in the known universe of a being that consists of three other beings. Thus no one can claim that this is how God is, they can only speculate.
However, lets continue with this line of reasoning. The Father is called God, Jesus is called God, The Holy Spirit is God.
25 And Eliu said to the prophets of shame, Choose to yourselves one calf, and dress it first, for ye are many; and call ye on the name of your god; but apply no fire.
26 And they took the calf and drest it, and called on the name of Baal from morning till noon, and said, hear us, O Baal, hear us. And there was no voice, neither was there hearing, and they ran up and down on the alter which they had made. (1 Ki. 18:25-26 LXE)
We see that Baal is called god too. If being called god is the only criteria for being in the Trinity what about Baal.
Why is it that when discussion of the Trinity takes place, context goes out the window? Happens every time.
You previously quoted 1 Cor. 8:6, so let's look a little more at the context:
1Co 8:4 Therefore, as to the eating of food offered to idols,
we know that "an idol has no real existence," and that "there is no God but one."
1Co 8:5 For although there may be
so-called gods in heaven or on earth—as indeed there are many "gods" and many "lords"—
1Co 8:6 yet for us there is one God, the Father, from whom are all things and for whom we exist, and one Lord, Jesus Christ, through whom are all things and through whom we exist. (ESV)
A god is whatever one chooses as their object of worship. So in one sense, yes, there are many gods, but in the sense that we are speaking of regarding the true, living God, there always has been and will only ever be, one.
And of course being called a god is not the only criteria for being in the Trinity. No one has made such a claim.
But you do accept polytheism. Isn't it your position that the Father is God, the Son is God and the Holy Spirit is God? That's three Gods. Now I know you'll say they are one God. But in reality that's just word games. If the Father is not the Son and the Son is not the Holy Spirit you have three they can't be one. As I said, there is no example in the known universe.
Earlier you said it is the only logical conclusion. Maybe something is being misunderstood.
No, the Trinity is not polytheism. The wording of the doctrine of the Trinity is very specific to avoid polytheism--three
persons, one God. If you want me to get all philosophical, I have an article in a Bible that explains how this is logically possible.
You say "there is no example in the known universe," but that is not at all an argument, or at least not at all a good one. God is who he is; there is no other like him. The closest analogy I have come across is the Triple Point of substances. Water, for example, at a certain pressure and temperature, can simultaneously exist in gaseous, liquid, and solid forms. One substance, three states. Of course that could also be used to support modalism (every analogy has its shortcomings). The difference being, we know that the Father is not the Son, the Son is not the Holy Spirit, and the Holy Spirit is not the Father. They are all distinct, yet referred to either explicitly or implicitly as God.
It just seems to me that if a single substance as simple as water can simultaneously exist in three different phases given the right conditions, how can we say that God cannot?
https://en.wikipedia.org/wiki/Triple_point