You are going to have to clarify because I see no posting of yours addressing the canon. But to your question, the canon was largely agreed upon with regard to the gospels and Pauline corpus by the middle of the second century in both local and more broad settings. And many of the general epistles and revelation was already being used locally without top-down declaration. You don’t even see local councils discussing the canon till the fifth century and even these don’t agree on all books discussed. You also see disagreement between early church fathers, particularly regarding the deuterocanonicals, where Jerome and Augustine disagreed upon whether the deuterocanonicals are to be taken in the same way that the other books are.
This is the most facile statement I have seen. Would you care to substantiate the bold portion of your post?
The first ecumenical Council to address the canon (if you can even call it that after the 1054 schism and the Reformation) didn’t even occur until 1546, almost 30 years after the Reformation, and after the Reformers sided with none other than Jerome, the translator of the Vulgate
That is false. The first Ecumenical Council to address the canon was Florence, Session 11—4 February 1442:
"Most firmly it believes, professes and preaches that the one true God, Father, Son and holy Spirit, is the creator of all things that are, visible and invisible, who, when he willed it, made from his own goodness all creatures, both spiritual and corporeal, good indeed because they are made by the supreme good, but mutable because they are made from nothing, and it asserts that there is no nature of evil because every nature, in so far as it is a nature, is good. It professes that one and the same God is the author of the old and the new Testament — that is, the law and the prophets, and the gospel — since the saints of both testaments spoke under the inspiration of the same Spirit. It accepts and venerates their books, whose titles are as follows.
Five books of Moses, namely Genesis, Exodus, Leviticus, Numbers, Deuteronomy; Joshua, Judges, Ruth, four books of Kings, two of Paralipomenon, Esdras, Nehemiah,
Tobit, Judith, Esther, Job, Psalms of David, Proverbs, Ecclesiastes, Song of Songs,
Wisdom, Ecclesiasticus, Isaiah, Jeremiah,
Baruch, Ezechiel, Daniel; the twelve minor prophets, namely Hosea, Joel, Amos, Obadiah, Jonah, Micah, Nahum, Habakkuk, Zephaniah, Haggai, Zechariah, Malachi;
two books of the Maccabees; the four gospels of Matthew, Mark, Luke and John; fourteen letters of Paul, to the Romans, two to the Corinthians, to the Galatians, to the Ephesians, to the Philippians, two to the Thessalonians, to the Colossians, two to Timothy, to Titus, to Philemon, to the Hebrews; two letters of Peter, three of John, one of James, one of Jude; Acts of the Apostles; Apocalypse of John."
I highlighted the books Martin Luther et. al. removed nearly 75 years later.