Suppose I give you links from independent historians or maybe even the President of Israel, stating that the official Jewish Canon of scripture was not established until 70 yrs after Christianity began - under the direction of Rabbi Akiba.
Would you then accept it? Nope.
We know from the Dead Sea Scrolls, that at least one Jewish community, regarded the 7 books as scripture.
We know that the official Jewish canon did not. Why? Because Christians were using those 7 books as scripture. The Jews wanted to distance themselves from the Christian community.
Fast forward to the 16th century and you will see how Martin Luther participated in Satans finest hour by snatching countless souls from the Church - with a couple false doctrines and LESS Bible - and no Eucharist!
One of the interesting aspects of the Qumran caves, sealed up in 68 A.D., is that fragment 7Q5 is from the Book of Mark. So to add to your argument, "Why didn't the Jews cannonize that Book?"
In other words, as you say, the Jews when they did cannonize their books, did not want anything of Jesus being the fulfillment of prophecy....
By the way, I heard there were other fragments of N.T., scripture in the Qumran caves....Honestly, I will have to research this out a bit. But the implications are profound, that all the dating thusfar of N.T. books and the "theories" as to when they were written, are wrong. This would really trash a lot of theories....
Also, the Septuagint was the scripture used during the time of Jesus, Greek was the language of the day, and it had been since about 300 years B.C. When one bases their arguments that they are going by Hebrew Scriptures, such an argument becomes faulty....
If one goes by Jewish cannonization, it was a process of about 400 years, from 200BC to 200AD...So why didn't they include the Deterocanonicals? For the same reason they did not put in the N.T.
They point to Jesus, as the Messiah in a "strong" way.
And of course that includes strong support of Catholic teachings....So Luther wants his cake and eats it too....He rejected("ate") the Deuterocanonicals that point to Jesus, to "have" his "religion"....