Well, the Biblical account is clear that Abraham was born in Ur, as were his people. Eventually Abraham’s descendants, the Israelites, under Joshua’s leadership, displaced a group of people, collectively called the Canaanites, from Israel under God’s command.
Who knows if the Canaanites were the first to inhabit that land. I highly doubt it. There was a major ancient trade route that ran followed the lush fertile crescent from near Ur to around Israel.
That trade route is interesting. There was likely a mixing of genes, whether through inter-marriage or migration of people.