So Yahweh FAR outdates Norse and Greek mythology. The concept of Yahweh seems to have evolved from the Mesopotamian god El, the God of rain and fertility, king of the old Canaanite pantheon, which dates back at least to about 2000 BCE, despite originally being a separate deity entirely, subordinate to El. The book of Deuteronomy even references this relationship (32:8-9), though the world "Elyon" is somewhat ambigous, and translated in most Christian sources from the Mormon Church to the King James Version as "the most high" [1] [2]. According to historians like Nissim Amzallag, Yahweh at some point evolved into the sole creator God, taking on the roles and attributes of El as early Judaism evolved into a monotheistic religion, though retaining attributes associate to him in the polytheism days, such as being associated with desert and metallurgy [3]. Unfortunately I'm not an expert on the subject, and I'm sure others in this sub reddit could give you much more precise answer with better research, but I think it's worth saying that, if anything, the question should be how much Norse and Greek mythology were themselves influenced by the Canaanites and not the other way around.
[2] https://www.biblegateway.com/passage/?search=Deuteronomy%2032&version=KJV
[3] Amzallag, Nissim. "Yahweh, the Canaanite God of Metallurgy?." Journal for the Study of the Old Testament 33.4 (2009): 387-404