This is a very recent and, from my understanding, poorly supported theory that conflates what little we know about the ancient Canaanite pantheon and early Judaism and using linguistic similar names to construct a mythology (and there are many similar sounding names because, well, the languages are related) where we have no supporting texts... EXCEPT for the ancient Hebrew scriptures... which are strictly monotheistic but discounted because... reasons...Nope.
He was, strangely enough, apparently the Canaanite god of metallurgy. shrug
Yahweh
Yahweh is the name of the state god of the ancient Kingdom of Israel and, later, the Kingdom of Judah. His name is composed of four Hebrew consonants (YHWH, known as the Tetragrammaton) which the prophet...www.worldhistory.org
Basically, a theory which makes a lot of sense is that he was originally the god of copper/bronze and metallurgy for the Canaanites and a few other related groups, and that the cult that eventually formed Judaism either focused their entire worship on him as the One True Creator or appropriated him for their own uses.
Meanwhile we take at face value similarly ancient religious texts concerning the Babylonians, Egyptians, and Assyrians. Somehow their ancient religious texts are considered to be accurate to what their people believed in that time, but Jewish ones are treated as suspect because... well... REASONS.
It's frankly a continual disgusting double standard within archeology and history that the Bible is treated as a suspect source despite that when you compare it to other historical documents its both better preserved, and consistently as accurate if not moreso than other historically preserved documents.