It should be highlighted that although several commentaries allude to Michael possibly being Jesus, these self same commentaries also acclaim Him as God.
There are three parts to the description of the Lord's voice in 1Th.4:16, the last part rarely being highlighted (emphasis mine):
(NWT) because the Lord himself will descend from heaven with a commanding call, with an archangel's voice and with God's trumpet, and those who are dead in union with Christ will rise first.
(ASV) For the Lord himself shall descend from heaven, with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first;
Commentary on this verse
Wesley:
With a shout - Properly, a proclamation made to a great multitude. Above this is, the voice of the archangel; above both, the trumpet of God; the voice of God, somewhat analogous to the sound of a trumpet.
Gill:
with the voice of the archangel; so Michael is called, in Jud.1:9 with which compare Rev.12:7 and who perhaps is no other than Christ himself, who is the head of all principality and power; and the sense be, that Christ shall descend from heaven with a voice, or shall then utter such a voice, as will show him to be the archangel; or as the Syriac version renders it, "the head", or "prince of angels"; and which whether, it will be an articulate voice, such as was expressed at the grave of Lazarus; or a violent clap of thunder, which is the voice of God; or the exertion of the power of Christ, is not certain: it is added, and with the trump of God; called "the last trump", 1Co_15:52 because none will be blown after it, and may be the same with the seventh trumpet, Rev_11:15 and here the trump of God, because blown by his order; or by Christ himself, who is God, and so be the same with the voice of the archangel; and these figurative expressions are used, to set forth the grandeur and magnificence in which Christ will come; not in that low, mean, and humble form in which he first came, but with great glory, and marks of honour and respect; with angels shouting, trumpets blowing, and saints rejoicing.