Liberal and Reform Judaism does not believe in the arrival of a human messiah who will literally gather Jews in the Land of Israel and cause the physical resurrection of the dead. Rather, Reform Jews focus on a future age - the World to Come - in which there is a perfected world of justice and mercy.
From - Eugene B. Borowitz, Naomi Patz, "Chapter 19: Our Hope for a Messianic Age" in Explaining Reform Judaism (1985). Behrman House.
For the Orthodox Jew the anointed one or messiah may not be one of the beings of the one true God. But must be a king who will rule the Jewish people, restore the promised-land, and come from the family line of David. All of this is clearly stated in Wikipedia.
I'm not sure any well learned Jewish individual actually believes God is a single person, face or attribute. "Absolute unity" in the sense of unified, yes.
Exodus 33:14 ”My Presence will go with you”
Backed up by Deuteronomy 4:37
Genesis 1:26 “Let us make” and “in our likeness”,
Genesis 3:22 “now become like one of us”,
Genesis 11:7 ”let us go down”,
Backed up by Genesis 2:18,
Isaiah 6:8 “who will go for us“ more like this in Isaiah 41:21-24,
“they caused me to wander” (Genesis 20:13), “they appeared” (Genesis 35:7), “they drew nigh” (Deuteronomy 4:7), “they went” (2 Samuel 7:23), and “they judge” (Psalm 58:11), “Creators” (Ecclesiastes 12:1), “Makers” and “Husbands” (Job 35:10; Psalm 149:2; Isaiah 54:5).
“holy”, another plural in Hebrew:(Joshua 24:19; Proverbs 9:10, 30:3).
The word Elohim is used thousands of times for “God”; Adonai is used hundreds of times for “Lord”; both of these words are plural nouns in Hebrew.
If you know Hebrew, you know God is not a single person, face or attribute to the Jewish people.
This shows in most translations of the old testament.
I think that is enough to say that the Jewish people do not think God is limited in being a single describable concept.
But, I think this forum is supposed to be about Christianity.