The Hebrew canon is irrelevant. The Apostles used Septuagint as reference in over 90% of the cases.
Josephus ...
Josephus was not a Christian, but a Pharisee. As such he would not be using Christian sources.
Early church fathers such as Origen, Rufinus and Augustine made a distinction between the Hebrew Canon and the apocryphal books
Origen was not a Church Father. Eusebius was hardly a reliable source. +Jerome included the deuterocanonical books in the Vulgate.
The Eastern Church used the deuterocanonical books because that's what was passed on from the beginning.
The rabbis at Jamnia (100 AD) threw out not only the deuterocanonical books but the NT books as well.
"The Hebrew canon is irrelevant. The Apostles used Septuagint as reference in over 90% of the cases."
Incredible. Jesus cites and authenticates the Hebrew Canon (the Law of Moses, the Prophets and the Psalms) exclusively and that is irrelevant. The apostles never cited the septuagint as authentic. The allusions are of no more weight than their citing pagan poets and philosophers.
Origen was the scholar who influenced Augustine's allagorical interpretation of scripture. But you did not mention Rufinus' or Augustine's distinguishing the Hebrew Canon from the apocryphal books, or the fact that in the early fourth century they were not part of the canon catalogues of the mentiond men and councils.