I would like to come again to a point that has remained undiscussed:
On this basis, I endorse the following view:
I think this view is supported by you @Christy as well:
Also @mitchellmckain seems to argue along this line to some extent:
So, it seems we may find common ground in the following explanation:
At the end of the flood God definitely re-create the humankind by making all homo sapiens (up to possibly 14 millions) into a population of human beings called to live loving and respecting each other, and therefore accountable to God: “From each human being I [God] will demand an accounting for the life of another human being […] for in the image of God has God made mankind.” (Genesis 9:5-6). As a result, from this moment till today ALL peoples on earth share in the dignity of being in the image of God.
In the light of this explanation one can say that God made first a “beta-version” of humankind, and scheduled the “general release” for after the flood, and this way of doing is clearly motivated by God’s mercy.