But I want you to understand that the head of every man is Christ, the head of a wife is her husband, and the head of Christ is God (1 Cor 11:3).
Some unitarians and Nicene subordinationists cite this verse to prooftext their respective positions. But that falls well short of what they need.
In the economy of salvation, the Incarnate Son submits himself to many things. He submits himself to Joseph and Mary. Does that make him intrinsically subordinate to his mother and stepdad? He submits himself to Pilate, Caiaphas, and the Sanhedrin. Does that make him intrinsically subordinate to Roman and Jewish authorities? He submits himself to the Mosaic Law. Does that make him intrinsically subordinate to the Mosaic Law?
1 Cor 11 is dealing with church order. That pertains to the economy of salvation, not the immanent Trinity.