The short answer, in my view, is the latter.

But God is sovereign over all things, and "is doing a million things in every thing he does." There could be some prophetic importance to it all, but it doesn't mean they're necessarily the "good guys." And Paul is very clear that "all the promises are yes and amen in Christ," that "if you are in Christ, then you are Abraham's offspring indeed, heirs according to promise," and that his offspring are not counted according to blood/ethnicity but according to having the same faith in Christ that Abraham had.