At no time did God call Angels, "Sons". Angels are neither male nor female. "Daughter's of Men" were the races of Cain that didn't follow God, "Son's of God" were the Adamic Races. KNOCK THIS FUCKING GNOSTIC FILTH OFF and at least pretend you can correctly divide the Word of God.
Only eight souls survived the Flood according to 1 Peter 3:20. The other extinct races were deemed too wicked and perished.