Orson Pratt teaches that Adam is both an "archangel" and a "God."
Orson Pratt, "Celestial Marriage," Journal of Discourses, 26 vols. (Liverpool: Horace S. Eldredge, 1871), 13:187
According to the revelations which God has given, there are different classes of angels. Some angels are Gods, and still possess the lower office called angels. Adam is called an Archangel, yet he is a God. Abraham, Isaac and Jacob, no doubt, have the right to officiate in the capacity of angels if they choose, but still they have ascended to their exaltation, to a higher state than that of angels—namely, to thrones, kingdoms, principalities and powers, to reign over kingdoms and to hold the everlasting Priesthood.