The later prophets are what we normally think of as prophets. They stood out against authority and asked people to reform their ways to that of Yahweh, their God. They were writing prophets, as opposed to the early prophets who did not write, but were written about. These later prophets are normally divided into the three major prophets and the twelve Minor Prophets. There were three famous major writing prophets whose works are very long. Isaiah lived in the 8th century BCE, but his work was not finished until around the 6th century BCE. On the other hand, Jeremiah and Ezekiel were 6th century BCE prophetic writers around the time of the Babylonian Exile.
In fact, we are under the illusion that there is only one inspired Bible, when there were many versions of the inspired Bible with various interpretations. First of all, there is the Hebrew inspired canonical Bible, the Tanakh, with the 10th century CE Hebrew Masoretic text that has its origins millenniums earlier. The earliest known collection of these Hebrew writings was in the 2nd century BCE. This Hebrew text had 24 books, the 5 books of the Torah, 4 books of the early prophets with 15 books of the later prophets. The other writings were in dispute as to their canonicity.