Those who are Roman Catholics follow the Catholic Church of Rome. The others, the sister Catholics, are of the Eastern Orthodox version who do not recognize the Pope as head of the Church.
I don’t know any Roman Catholics who get their knickers in a twist about being identified as Roman Catholic.
You wrote:
“I don’t know any Roman Catholics who get their knickers in a twist about being identified as Roman Catholic.”
“I don’t know anyone who voted for Nixon.” This was attributed to the flamming liberal named Pauline Kael in 1972 when Nixon won the elction by a landslide. Maybe she just didn’t know many people. Maybe she didn’t know the right people.