Who is “The (Arch)angel of the Lord”?

Also Pre-Christian Judaism agrees.   This is reflected in its Targum on Genesis  32:25; its Midrash on Exodus 18:5; and its Book of Jubilees 1:27 & 2:1.   In the latter, Michael is ''the Angel of the Presence" Who instructed Moses on Mt. Sinai.   In the Ascension of Isaiah 9:22, He is the Mighty Angel Michael, praying on behalf of humanity.   And in the Testimony of the Twelve Patriarchs, in the Testimony of Dan (6), Michael is "the Angel Who intercedes for you — for He is the Mediator of God and man for the peace of Israel" (cf. First Timothy 2:5).