By contrast, St. Augustine, some of whose writings are far more suspect than any of those of St. Gregory, was made the Father of Fathers in the West.
True to a point about the "Father of Fathers" but we tend not to draw as bright a line as you do between the Fathers and the later theologians. Aquinas is every bit a lodestar in the West as Augustine is--maybe even more so. Then throw in Molina and the Jesuits for some real fun. Fact is, Catholic theology is not the Augustinian monolith that some make it out to be.
"Catholic theology is not the Augustinian monolith that some make it out to be."
True enough. Fr. Azkoul does a good job of tracing its various lines in his ONCE DELIVERED TO THE SAINTS.