I doubt you'll listen to anything aside from an agreement which won’t come from me. In the context of Galatians 3, there are certainly numerous parties. There are those under the law and Moses and there are those under faith and Jesus. Then there is God.
It follows suit that those under the law, Moses, and God are distinct parties. It follows suit that “those in Christ” are the seed of Abraham, including Jesus himself. So there are those under faith, Jesus, and God.
I think the more I examine this passage, your result actually gets worst. Paul said that the seed of Abraham refers to one, not many. Then he concludes the shape by saying that those in Christ are the seed of Abraham which would make church members God according to the construct of your argument.
I don’t see your disconnect here. I’m not budging on anything. Maybe it’s better you just state what you believe and stick to it and I’ll do the same.