Yes, in fact there are indeed Bible verses that support the idea that Yahweh is a son of "EL, and the Israelites derived from a polytheist culture embracing Yahweh as the God of their own:
Deuteronomy 32:8-9 NASB
When the Most High gave the nations their inheritance,
(The Canaan most high, just like archaeology tells us)
When He separated the sons of man,
(divided up the nations)
He set the boundaries of the peoples
According to the number of the sons of Israel.
(We know from the Septuagint, and more recently from the Dead Sea Scrolls, this should read “Sons of God†and not "Sons of Israel")
For the LORD'S portion is His people;
(Yahweh is the Lord in reference)
Jacob is the allotment of His inheritance.
--end verses--
So "El" assigns the nations of people according to the number of sons of God; his sons of God.
And we know this from Archaeology; El and his wife Asherah had 70 divine sons, from which archaeology tells us that Yahweh as one of this sons.
(De Moore 1980, 175)
Ugaritic text indicate that among the inhabitants of Ugarit, Yahweh was viewed as another son of El. KTU 1.1 IV 14 says:
sm . bny . yw . ilt
"The name of the son of god, Yahweh."
Read more: Torah, Ugartic Bible
Torah, Ugartic Bible
In reality, there is probably good reason why people hold a sola scriptura view, because the reality is discomforting.