I would suppose if the Sodomites wanted to create a hybrid race, they would have brought their women over to Lot’s house.
People then must have been really different from how we are now - offering up virgin daughters to a rape mob because that’s a lesser evil than offering up visitors, or Lot’s daughters getting their father drunk and lying with him because that’s a lesser evil than allowing their lineage to die out...or waiting for new husbands and a step-mother...
I don’t think they necessarily even knew they were angels. They were undoubtedly handsome men in appearance and Lot, who also didn’t seem to first realize who they were, acted to get them out of the square because he knew his neighbors were not nice at all.
Still, I’ll stick with the view that even he underestimated their wickedness and probably thought once they were under his roof there would be no more problems.
Don’t think it was to create a hybrid race, but rather to garner the power in those relationships.