Hi Adstar,
From scripture, it appears Michael is an archangel and Gabriel stands in the presence of God.
Jude 9
9 Yet
Michael the archangel, when contending with the devil he disputed about the body of Moses, durst not bring against him a railing accusation, but said, The Lord rebuke thee.
Luke 1:19
19 And the angel answering said unto him,
I am Gabriel, that stand in the presence of God; and am sent to speak unto thee, and to shew thee these glad tidings.
Hope this helped.