This topic delves into what I’d call, experimental theology. It’s beyond the comprehension of everyday Christians, theological boundaries are still being developed and explored.
There have been quite a few books written recently on the topic of Adam and Eve.
Of course, top on the list I’d recommend is John H Walton’s, The Lost World of Adam and Eve.
He’s an original thinker with a solidly conservative background, yet still able to think outside of the box. He recognizes the modern challenges to A&E. His ideas are challenging but approachable, certainly he provides ideas to ponder
From a broader view of Evolutionary Creationism, Peter Enns has written a provocative book entitled, “The Evolution of Adam, what the Bible does and doesn’t say about human evolution”.
Endorsed by some well known biblical scholars, this book tackles issues that come up and contributes suggestions for their resolution. Some you may like, others... not so much.
A bit ( just a little bit) more conservative is Fazale Rana and Hugh Ross’ contribution, “Who was Adam?, a creation model approach to the origin of man”. These authors come from a progressive creationist background but interact with recent research.
Each author mentioned interacts congenitally among themselves and others amid the BioLogos website.
Rob