The OT Jews ended up with the LXX and later a shortened version…
Watch out, there. The OT Jews did not have a strictly defined Canon.
The Sadducees used just the first five books of the OT, called the Pentateuch. In your study of the Bible, you’ll find that they do not believe in the Resurrection of the Body. This is a belief that developed in later books of the OT. When Jesus discusses Scripture with the Sadducees, He only uses Scripture from the Pentateuch.
Incidentally, I believe the Samaritans also used just the Pentateuch. Something about books about a bunch of prophets telling you that you are evil and have turned to idolatry didn’t strike the Samaritans as very inspiring!
The Pharisees used the LXX, which included the Deuterocanonicals and several other books, which were later rejected both by the Catholic Church and the Jewish. There were 4 Esdras (where now we have two, called Ezra and Nehemiah). I believe 3 Maccabees was also in there, as well as a couple of others. Jesus will quote from the Septuagint (LXX) when “discussing” Scriptures with the Pharisees.
I also think the Essenes (who hid out in the wilderness, and probably were eyewitnesses to John’s baptizing at the Jordan) had even a few more books in their Scriptures.