Our Lord and Savior may indeed be a messenger, but not to be confused as a created angel.
You forget that Moses did see God face to face and even return with a red face and covered his face
You say no man has seen God and that is true but God can elevate a man from his mortal status to a transfiguration for a period of time.
He has been pre-existant and cocreator as the second person of the Trinity, still one God.
Our ONE in mind, not a "3 in one oil" as you Trinity folks try to peddle. I been over this many times yet none of you really read and ponder the words.
God the Father has body parts, His only begotten Son in Flesh and Blood has a resurrected body now of flesh and bone eternal body have no need of blood it is a temporal things to live in he Kingdom of earth.
You have the Holy Ghost that is spirit no body parts all three are one in mind!
There may be lessor gods, but Christ, since the incarnation is also human and seated to the right hand of the Father.
I don't understand your description here?
There are many places in Scripture where man has seen the image of God in the Son, God incarnate.
Even the Jewish Targums had a firmer grasp on this that the Mormons, understanding the Shekinah Glory and the Burning Bush as Theophanies associated with the Memra(WORD) of the Lord.
Either you are trying to be deceptive or don't know your Mormon doctrine. According to LDS doctrine, Moses did NOT see God the Father, but saw "Jehovah" (Jesus Christ before his birth in Bethlehem).