Theologians, priests, pastors, bishops, deacons, clergy, and the laity of all "Christian" denominations will render an OPINION. If they profess more they are using God's name in vain. I have the responsibility to arrive at my truth between myself and my God.
Generally, it's accepted among the Orthodox that Deity is found in the Trinity and no other.
You can accept this as truth or not. Perhaps you do not.