This is great sutff.
When the Israelites emerged they began writing their own myths. Every culture does this, it's religious syncretism. They took the flood myths they had heard and wrote their own setting it centuries in the past. They couldn't write it as a recent event because there obviously wasn't a recent flood. Noah is a fictional character. He lived to be over 500 years old, this is mythology. The first Israelites were even using Ashera who was a Goddess from the culture they came out of. Ashera was the consort of Yahweh. Archeologists have found Ashera figurines and writings that say "Yahweh and his Ashera".
They did not commit to monotheism until the 2nd temple period 6BC when scripture says they decided they were being punished for worshipping false Gods. This was the high priests response to being invaded again, this time by the Persians.
The ancient Mesopotamians were not writing the same story. Gilamesh and Enkidu and numerous Gods and monsters are part of an epic story found on many clay tablets. The idea that this was actually Yahweh, the names are wrong, its 5 months instead of 6 days and endless other changes is not likely. The Israelites just took the basic concepts of a flood from a God, landing on a mountain and so on and made a new story.
Just read the Mesopotamian myths:
Epic of Gilgamesh - Wikipedia
It is not possible to confirm or deny any of these things you mentioned - which isn't to say that they are not possible explanations - we just can't confirm them.
Now - before I begin - note that I am going to argue from the position from the Biblical narrative.
I believe that it is important to try and view these things from that perspective - because many explanations are possible.
As far as we know - the Israelites did not have a written language until after the time of Moses - so that may explain why they did not write their stories until that time.
So - of course - if there had been a global event in the distance past - cultures that had a written language before the Israelites would have recorded it before they had a chance to.
That does not mean that the story was "stolen" - many and all cultures may have had a version of that story. It would have been passed down orally.
And there is no reason to assume that their oral tradition would sync up with the story of Gilgamesh.
I just don't see how the ancient Mesopotamians recording a story about a Flood event long before the Israelites did is evidence that the Israelite version of the story is fiction or mythology.
The Genesis account claiming that Noah lived to be 950 is - in and of itself - not evidence for him being fictional - in my opinion.
And the Israelites recognizing or even worshipping multiple gods anciently is no shock - the Biblical account claims that they did and that God did not like it.
Of all flood narratives (hundreds) in almost 1/2 they are not created by divine origin, no God. You think they would forget that? So they are not all the same myth being copied by other cultures.
No - I don't believe that every Flood event narrative needs to mention God at all.
We are talking about thousands of years and so many languages and cultures.
Not everyone is going to want to attribute a divine source to this old story.
Almost all flood myths come from societies that live near the sea or a major river.
Don't most societies live near the sea or major rivers?
Noah and his wife were 500 years old and only then did they have 3 children?
The Genesis account does not claim that Noah had only the three sons just that he "begat" those three. It never says "only".
It is likely that Noah had more children both before and after the Flood event.
People like to assume that if the Bible does explicitly state something - then it didn't happen.
If that were the case then how did Adam, Eve, Cain, and Seth - populate the entire planet? Where did Cain's wife come from?
A count of all animals and insects of the time is about 2, 065, 000
How was this count tabulated?
Also - I do not believe that Noah took samples of "all" animals. I believe that the meaning of the word "all" changes depending on the context.
For example - Genesis 6:13 records God saying to Noah, "The end of all flesh is come before me"
Obviously - if God had intended to save Noah's family and these animals - this "all" should not be taken literally.
Genesis 6:21 again records God saying to Noah, "And take thou unto thee of all food that is eaten"
Obviously Noah did not pack up "all" the food in the world.
So - I believe the word "all" - within the context of animals and food - was referring to specific things that God and Noah had discussed previously.
As Noah prepared for the eventual Deluge - God gave him instruction - and therefore the use of the word "all" would be in reference to those preparations and instructions.
Basically - "all" the food and animals that God commanded him to include.
Yahweh instructed to take animals by "sevens" rather than 2.
Only the certain animals. The one designated as "clean" I believe.
Noah also needed food for all animals for 1 year. 370 bales of hay would be needed for just the elephants.
If he was the one that preserved the elephants on the Ark - then yes.
When I consider that Flood event stories are had among many peoples around the world - I believe that is supporting evidence that there were other survivors - which were either lucky or they also had been given instruction by God - and that the Genesis account records just one of many.
A JW pamphlet points out every "kind" of animal would be put on the ark rather than every species. This makes for less animals. But now you have to believe that in 4000 years 1 kind of monkey got off the ark and now we have 330 species? Same for every other "kind" of animal.
This would require the most rapid evolution ever. Which fundamentalists don't even believe in.
Yeah - it's weird. Unless - of course - God were somehow involved.
Most animals could not survive without special equipment, lighting and such.
True - unless God were somehow involved.
The Ark floated for 5 months and ended up close by on Mt Ararat, 450 miles?
There is no way to determine where Noah built the Ark and if the mountains of Ararat we know today were the same mentioned in the Genesis account.
All mammals since this time came from Mt Ararat but the distribution of mammals shows this is impossible. The further away from Mt Ararat would show fewer mammals. The distribution of mammals show far more mammals in places far away from the Middle East.
If Noah had the Only Ark - or other method of preserving life - and he indeed landed in the Middle East - then this would be a good argument against the idea.
Why a God wouldn't just use magic to change humans in some way rather than kill billions of animals?
Change humans in what way?
I mean - since He is the one with all the "magic" - why couldn't he chose the Ark option - then "magically" shrink all the animals in the Ark or put them all into stasis or any other number of things to make the story work?
All of the flood myths the versions near Mesopotamia are the most similar. Likely from an actual flood of the Tigris river.
It is most likely that the "cradle of civilization" was near where Noah landed - which would account for why their versions of the same story are so similar.
The Flood could have been a localized event. There's no way to rule that out.
The myth is about re-birth and taking it literal to mean a sky-god reigns destruction when people mis-behave means you miss the actual point of the story.
The story could have layers of meaning - including actual events.
Luke claims the flood was an actual event.
John claims Jesus watched the building of the Ark and the flood from heaven.
Showing the NT is likely also a made up story rather than divinely inspired.
Would you mind sharing these New Testament references?
From what you have shared - I still see no reason to disbelieve these sources.