That type of thing has been taught for decades in your NAB commentary , and still is on the Vatican's own web site.
I have been trying to get Catholic FReepers respond to the Church's embrace of "higher criticism" for years, but it has proven impossible.
Catholics grow up in a different culture than people like you and me. To us, the Bible is an extremely potent touchstone--indeed, the most potent. This is a part of us, of the very warp and woof of our religious personalities. But with Catholics it is the Catholic Church that holds this position. The Bible is there, and individual Catholics may reject higher criticism and even evolution, but they simply don't make a big deal of it. They are not troubled by the fact that the majority of their co-religionists and the entirety of their leadership believe the exact opposite on these matters, because these matters simply aren't that important to them. They are invested in explicitly Catholic things--mass, rosary, Mary, the Pope, etc.--and so disagreements about Biblical inerrancy or even its origins simply do not touch them deeply.
I cannot tell you how frustrating this has been for me. I have a few Catholic friends here who are indeed dedicated to both Biblical inerrancy and to the traditional understandings of authorship. But I have never been able to get them to say much of anything. Yet when any of those explicitly Catholic things is under attack they instinctively join ranks with their evolutionist and higher critical co-religionists. This is their first and primary loyalty, and this is where all their emotional loyalties lie.
As I said, it's frustrating. Despite the continual boast of having "given the bible to the world" they simply can't be bothered to make defending its authenticity and veracity a priority--not when all those "ignorant rednecks" out there are attacking the mass and the rosary.
I was a fundamentalist who actually joined the Catholic Church once because of the (perfectly valid and irrefutable) historical argument. But the only thing I learned was that historical chrstianity is far removed from everything that had ever made the chrstian religion "true" and dear to me.
As William James once said, Catholics and Protestants will never understand one another.