IMO that's a lousy place to start. It's Wikipedia, for crying out loud - anybody can write anything they want about anybody else. Case in point: The Whore of Babylon. Many sections of the article tell me that the Whore is the Catholic Church in general, and the papacy in particular. Should I believe what it says? Why not? I'm supposed to believe the "protestant denominations" article. Why not believe the other, also? After all, it's on Wikipedia!
A denomination is technically Catholic if it is in full communion with the Papal Office in Rome; ie, they recognize Francis I as the successor to Peter the Apostle. The Latin Rite, aka "Roman" Catholic, is the most well-represented in the U.S., although there are small communities of the other Eastern Catholic churches present.
Within the 6 rites of the Catholic Church (which include 23 "particular Churches"), there are doctrinal differences, but none view the other as apostate or lesser, and all view all Catholics as equal brethren and sestren. However, it is common to hear the churches accuse one another of causing the doctrinal schism in the first place. Note that this is not the same as heresy - it's a stronger-sounding term for "you disagreed".
They hold a couple things in common, they fight over others, and yet they believe that each other are fellow Christians. How is this any different than Protestant denominations that hold to common creeds, i.e. the Apostles' Creed, the Nicene Creed, the Westminster Confession, the Heidelberg Catechism, etc?
So, do it yourself and quit your bellyaching.