Kinda hard to explain how for fifteen hundred years (or at minimum, a thousand) there were no Christians at all who did not believe at least most of the "false doctrines" of the Catholic Church.
Sure, here and there you might find exceptions to a single given doctrine. ("This group rejected the 'apocrypha'"; "This group rejected bishops"; "This group rejected the divine presence in the Eucharist"; etc.) But there is no record of any group rejecting several false doctrines from the time of the gnostics until the Reformation.
Prove that the church right after the death/resurrection of Christ taught RCC doctrine. I love how you guys always say "we are the real church" and can't point to anything in REAL early church history. I note the early church creeds don't teach your doctrine.