[count-your-change]

What comprised the Hebrew Scriptures was well known long before Yavne (Jamnia) councils 90 and 118 C.E.
Josephus spoke of the 22 books (some books were combined into one book) then accepted as part of the Hebrew canon but excluded apocrypha. (Against Apion,I)

Jesus and the apostles had no doubt as to what was included in the Hebrew Scriptures citing “the Law and the Prophets”, i.e., the entire Hebrew canon as we have it today, sans apocrypha.

Speaking of which, have you found what kings you were referring to in your earlier comment on Bel and the Dragon?

Or when these events supposedly occurred in Daniel's life?

“The second event was when Daniel was thrown into the lion’s den for 6 days for proving to a different king, from a different empire (Babylon), that the priests were frauds AND for killing the dragon whom the Babylonians worshipped.”

[Cronos]

What comprised Jewish Scriptures was the septuagint. This included what Protestants now call Apocrypha. Only post Jamnia was this excluded (a Jewish aim to "cleanse" texts of the promise of Christ)

the stories in Bel and the Dragon are stories that do not contradict the original story of Daniel as I explained above.