No Other Elohim Is Yahweh

This is the sentence that keeps the whole framework from collapsing into polytheism, and it is worth memorising: Yahweh is an elohim, but no other elohim is Yahweh.
Put plainly: "There is only one Yahweh. There is none like him ontologically... He is species unique."
Category and identity are different things. Sharing a classification does not mean sharing a nature. Every elohim inhabits the spiritual realm - that is what the word says. Only one of them created it.
And the biblical writers do not leave this to inference. They say it out loud, repeatedly, in the middle of texts that freely acknowledge other elohim exist.
Scripture links:
- Psalm 86:8 - "There is none like you among the gods, O Lord, nor are there any works like yours."
- Jeremiah 10:6 - "There is none like you, O LORD; you are great, and your name is great in might."
- Isaiah 45:5 - "I am the LORD, and there is no other, besides me there is no God."
- Exodus 15:11 - "Who is like you, O LORD, among the gods?"
One word covers the category. One name fills it alone.