Rome has taken different position on some things down thru the centuries, and ultimately there is often disagreement as to what official church teaching is, though
your rejection of the modern Vatican would make you more like a sedevacantist, though they reject JP2 while some RC apologists can criticize him quite a lot.
As an evangelical i look to Scripture as being the supreme authority on earth, being the only transcendent material source which is wholly inspired of God. And thus contend for the core essentials we both basically concur with, which cults and Islam reject.
I’m a Catholic and there ain’t anyone on God’s green Earth who is going to tell me otherwise.