Interesting OP and the opening list of the number of books that different sects accept.
What would be significant to the true biblical student would be
1]-Who came up with the original list?
They would be the ones that promoted the bible as the word of God. And, they would be the authority on translating it too.right?
2]=Why did they come up with the bible?
As a guide to how to behave? A beginning and end all on everything Christian?
3]- How do we know what belongs and what does not belong in the bible.
With some 40k different sects of Christianity, how would you know that you have the correct number of books and the correct books? How do you know that your sect is correct? They tell you? Or maybe you have a special funny feeling?
Most of us take our authority based on what parents and pastors have told us and we often take that as the authority. Is there another way to find out the biggest question about the bible?
Big questrion-vWHO HAS THE AUTHORITY TO DECIDE WHICH BOOKS ARE THE INSPIRED WORD OF GOD?
Martin Luther. Joe Smith, Pastor Russell, someone else who removed books that they didn't like or books that didn't fit their theology?
Surely, there is a legit source that formulated, propagated and protected the scripts through the centuries.
That would be the only authority in a sea of 10s of thousands of self proclaimed 'true religions'
TTWSYF