St. Augustine is accepted as a Saint in both the East and the West, however he not considered a major saint in the east, largely because he lived at a time when the interchange of language and ideas between the East and West was nearing its lowest point, and thus much of what he wrote was never translated in the East, so his influence was minimal.
That’s exactly right.
In fact, there was a great imbalance between the east and the west in the number of patristic authors up until that time. Tertullian and Augustine stand out in the west, both were converts but highly influential North Africans.
By this time the Roman church had changed it’s liturgy (it was not called a Mass until later) from Greek to Latin. As a result most candidates for the priesthood in the west were not studying Greek, and the demand for original Greek manuscripts dropped off, making them relatively rare and expensive in the west. The liturgical switch to Latin also meant that the scriptures needed a good new Latin translation (resulting in Jerome’s Vulgate). Greek patristic authors were sometimes available in translation, and the less popular ones became general unavailable.
Into this void steps Augustine, one of the most prolific authors of his time, or any time. He did not read Greek, and did not write Greek. His works circulated widely in the west, but not very much in the Greek speaking east, where there were so many other more familiar patristic authors available for reading. He was essentially crowded out in the east, much like a popular author in Germany today might be almost unknown in the USA, with few of his works actually translated.
He was not “Catholic in the broadest sense”, he was as parochially Latin as any author could be.
Anyway, Augustine is only one part of a whole series of authors who shaped religious thinking more in the west than the east, but it would be unfair to deliberately not mention him just because he was early.
If I were making a list of authors who influenced the east more than the west I would include but not limit the list to Origen, Saint John Chrysostom, Saint John Cassian and Saint John of Damascus even though these are all pre-schism authors. To leave them out would be unrealistic.