[fwdude]

There is NOT “one Catholic Church,” at least not in practice. They are all over the board with their theology and policy, every bit as much as the numerous denominations of Protestantism.

Additionally, there are many “rites” within Catholicism that vary widely.

[cloudmountain]

There is NOT “one Catholic Church,” at least not in practice. They are all over the board with their theology and policy, every bit as much as the numerous denominations of Protestantism.
YES, there is.

Additionally, there are many “rites” within Catholicism that vary widely
Very true but they do not vary WIDELY. They contain the required rites, readings and, of course, the Transubstantiation.