The text at Duet 32 says when the MOST HIGH El Elyon separated the people of the earth he set their boundaries according to the number of the Israelites... for YHWH's prtion is his people... I'm paraphrasing but note that El is the top dog... YHWH is the god of Israel and you could apply this to any nation in the area ... say Moab>>>
>>When El Elyon separated the people he set their number according to the Moabites for Chemosh's portion is his people. etc.<<
This is a fairly early text (likely exilic) that portrays El as top god and YHWH as on of his 70 sons.
As for the Genesis 10 reference this is a table of nations and the story is similar to what you have seen only YHWH is doing the dividing.This text is quite a bit later noting the Grecian names contained.