No, each diocese uses the same missal. The scriptural portions of the Mass are the same in any Roman Catholic Church in the world. And the entire Bible is covered in the three-year cycle, which then repeats. Just as the Liturgical Year covers the entire life of Christ.
Thanks for the info. It seemed to be the same thing each year. However there are some things I don’t recall from the Mass (about 20 years worth) that I read on my own, such as Ahab and Jezebel. Does it really cover 100% of the Bible (every chapter and verse) or just bits and pieces from each book?