cardinals
The Roman Catholic Church is the largest group of Christians in the world.
They are leaders of the catholic church.The Catholic Church
protestants
The Old Catholic Church is a group of people who left the Catholic Church after the First Vatican Council. They, as indicated in the answer below, are no longer Catholic as they are not under the Holy Father. There is no "Roman Catholic Church, it's just Catholic, not Roman Catholic. Roman is an epithet first commonly used in England after the protestant revolt to describe the Catholic Church. It is never used by the official Catholic Church..AnswerOnce you split from the leadership of the pope, you cease to be Catholic. Members of the Old Catholic Church are Catholic in name only.
In the past twenty centuries, more than one group has been excommunicated from the Catholic Church (there is no "Roman" Catholic Church, that is a slur invented in England after the protestant revolt). You would have to specify a time period to get a more precise answer.
The Puritans thought the Church of England was too Catholic.
George McCauley has written: 'The God of the group' -- subject(s): Catholic Church, Church group work, Methodology, Sacraments, Small groups, Theology 'Night Air Dancing' 'Sacraments for secular man' -- subject(s): Catholic Church, Sacraments 'Am I still a Catholic?' -- subject(s): Apologetic works, Catholic Church
The Great Schism, or East-West Schism, in the Catholic Church, produced the Eastern Orthodox Church, in the East, and the Roman Catholic Church, in the West. Both claimed to be continuations of the original Church. There is an article at the link below.
conservatives (e2020)
Roman Catholic
No, The Roman Catholic Church is the original Catholic Church. The Orthodox Church is not a "break-away" church. The only churches that broke away are the "Protestant" Churches. God be with you! If by 'original Catholic' you mean the original church founded by Jesus Christ and His Apostles, then most certainly yes, although there are some common beliefs.
The curia is the Pope's group of advisers. The Pope is the leader of the Catholic Church.