I think it’s as simple as any person who comes up with an idea then makes variations of that idea and then creates a whole bunch of variation possibilities of those initial variations. IE: all sorts of heads, necks, bodies, arms, legs, feet, colors even stripes and dots, skin types, fur types. God just had a blast using His imagination!
That’s all God did. Made animals, insects, creatures with all kinds of variations in one day. and that day He said it was good.
Then the next day took many of the best parts and included a part in His image and likeness and made humans. But again did not make all of us exactly the same. And that day He said it was VERY good.
I don’t see why science can’t see how simple that is.
I’m sorry but it’s apparent that you don’t understand what up to date biologists are saying and thus can’t get a perspective. You would profit from an explanation of evolutionary theory from the viewpoint of scientists