I'm only going to quote parts of the commentaries that deal with the relationship between Michael and Jesus Christ. These works are available online and can be easily consulted:
From the Benson Commentary: "The word Michael signifies, Who is like God? which name, with the title here given him, The great prince which standeth for the children of thy people, manifestly points out the Messiah, and cannot properly be understood of a created angel."
Gill's Exposition of the Bible: "And at that time shall Michael stand up,.... The Archangel, who has all the angels of heaven under him, and at his command, the Son of God, our Lord Jesus Christ; who is as God, as the name signifies, truly and really God, and equal in nature, power, and glory, to his divine Father: 'he shall stand up'; which is not to be understood of his incarnation, or manifestation in the flesh, for this refers to times long after that; yet neither of his personal appearance in the clouds of heaven, and standing upon the earth in the latter day; but of his spiritual presence among his people, and protection of them, and continuance with them: this respects the spiritual reigns of Christ, the Lamb's standing upon Mount Zion, and the 144,000 with him, Revelation 14:1, and this will be at that time, when the eastern antichrist, the Turk, will be destroyed;"
John Trapp's Commentary: "Shall Michael stand up,] i.e., The Lord Christ (that Prince of angels, and protector of his people), not a created angel, much less Michael Servetus, that blasphemous heretic, burned at Geneva, who was not afraid to say, as Calvin reporteth it, se esse Michaelem illum, Ecclesae custodem, that he was that Michael, the Church's guardian. David George, also another black-mouthed heretic, said that he was the one David foretold by the prophets, [Jeremiah 30:9 Ezekiel 34:23 Hosea 3:5] and that he was confident that the whole world would in time submit to him."
Hawker's Poor Man's Commentary: "Here is a most lovely account of Jesus, and of his office-character, as Mediator. I do not hesitate to believe, that the Michael here spoken of is Christ. In confirmation, turn to those scriptures. Revelation 12:7-11. How Christ then stood up for all eternity: how in time, and how forever; all his offices typify. Proverbs 8:22-23; Psalms 40:6-8; Hebrews 7:24-25; 2 Thessalonians 1:10. In every point of view, it must be a time of trouble. When Christ comes to make up his jewels, he comes also to take vengeance of them that know not God, nor obey the gospel of Jesus. Malachi 4:1; 2 Peter 3:10-11. But what a sweet close is this verse, of the safety of Jesus own! Isaiah 4:3; Luke 10:20; Revelation 20:12-15."
Geneva Notes: The angel here notes two things: first that the Church will be in great affliction and trouble at Christ's coming, and next that God will send his angel to deliver it, whom he here calls Michael, meaning Christ, who is proclaimed by the preaching of the Gospel."