As I showed you, one of the earliest interpretations of the Genesis creation (in the pre-Christian era), was that the creation account was revealed to Moses, at Sinai, in a vision. So you’re already halfway to my view.
As I have shown, non-Mosaic authors left an extremely large and very clear trace of their own hands on Genesis 1-11. That’s one of the reasons why there’s such an abrupt break between Genesis 1-11 and Genesis 12-50.
As I’ve pointed out, at some stage you need to actually address the evidence which is in the text of Genesis 1-11 itself. How does the MC model explain all that data?