Hi Jon, thanks for sharing your thoughts.
Are you saying that no cosmology drawings remain from ancient times?
For me, what’s interesting is not so much whether the ANE cosmology involved a “dome-like” shape of the heavens, but rather whether it involved flatness/hardness of the heavens. When the heavens are compared to a cast mirror or (in the End of Times) a receding scroll, I think that’s an important aspect of the imagery. If the Babylonians envisioned the cosmos like you describe (multiple layers like a cake), that would indicate the same idea of hardness/flatness of the heavens.
I would not say that’s a denial of the concept of a hard dome at all. I picture the clouds as “hanging poised” beneath the vault, in the same space where the birds fly, across the face of the heavens (Genesis 1:20, see quote below). I imagine that ANE cultures thought the blue color of the skies actually derived from an expanse of water located behind the vault of the heavens. That would make sense in the context of Genesis 1:6-10:
6 And God said, “Let there be a vault between the waters to separate water from water.” 7 So God made the vault and separated the water under the vault from the water above it. And it was so. 8 God called the vault “sky.” And there was evening, and there was morning—the second day.
9 And God said, “Let the water under the sky be gathered to one place, and let dry ground appear.” And it was so. 10 God called the dry ground “land,” and the gathered waters he called “seas.” And God saw that it was good.
Note how only the heavenly bodies (not the clouds) were “set in the vault” in Genesis 1:17-18:
17 God set them in the vault of the sky to give light on the earth, 18 to govern the day and the night, and to separate light from darkness.
Finally, here’s the quote from Genesis 1:20 describing how birds fly “across the vault of the sky”:
20 And God said, “Let the water teem with living creatures, and let birds fly above the earth across the vault of the sky.”