Could it be that we’ve already beat that dog to death?
“Supremacy” rather than primacy of Rome - not found historically. Primacy, per history is due to the fact that Rome was the Secular Capitol of Rome - had nothing to do with the person of St. Peter. Remember that St. Peter founded the Church in Antioch prior to stepping foot in Rome 3 years before his death. So if it had to do with his person, then the Catholic Church would be claiming both sees as the “vicar of Christ”
You don’t seem to object much to Peter’s primacy itself. As for the location, it had to do with where Peter died, quite simply! The schism with the Eastern churches, moreover, came more than 1400 years later, not in 300!!!
Filioque - a Latin word added to the Nicene-Constantinoplian Creed which is not only wrong in it’s Theology (an attempt at saying that God the Father is not the Eternal Source of the Most Holy Trinity with Jesus being Eternally Begotten of the Father and the Holy Spirit Eternally Proceeding from the Father - but rather that the Holy Trinity has two Eternal Sources: The Father and the Son and that the Holy Spirit Eternally Proceeds from both of them - this is not only wrong, but disrespectful of the Holy Spirit as it attempts to lower the Holy Spirit), but also was wrong in adding it to the Creed as once the Creed was in it’s completed form 2 separate Church Councils condemned any addition or ommission from the Creed - that anyone who would dare such a heresy would be anathema.
Here, I believe you forget one thing from the Prologue of the Gospel according to John. Jesus is the Son of God, and before the Incarnation He is the Eternal Word of God. Nothing did the Father do without Him, everything He did along with Him. So, why not the sending the Holy Spirit. Yes or no, is God One. The Father, the Son and the Holy Spirit ARE ONE!
Purgatory - the Roman Church came up with this idea that because we as Christians have always prayed for the dead that somehow there are 2 Fires. The Eternal Fire of God and a Temporal Fire - again, not a part of historical Christianity
Why pray for dead people if they are either in Heaven or in Hell, which can’t be changed?
Limbo & Immaculate Conception - both developments from the misunderstanding of Original Sin and it’s affects on the rest of the human race born into this world. Developments derived primarly from mistranslations into Latin from Greek.
What is the actual teaching of the Catholic Church on “limbo”?
As for the doctrine of the Immaculate Conception, tell me what’s wrong with it, if you can.
Papal Infallibility - developed from the continued misunderstanding of the role of each of the Patriarchates. One Pope, which I could remember his name off the top of my head, in either the late 1800’s or early 1900’s even claimed in an encyclical or letter that He was God on Earth - sounds more Ancient Egyptian than Christian. Even the Old Catholics broke away from Rome at that point.
Again, where do you see it in the present CCC? About that “encyclical or letter”, you must be more precise and not just quote hearsays, it would be a grave thing if it was said of the pope himself rather than of Jesus the Christ! I doubt it would have been said, if it ever was, in one case under proper infallible teaching channels! Distortion and mis understanding can have happened even in those days, you know!
Plus just look at the results, since Rome has removed herself from communion with the rest of the Church she has given birth to more than 30,000 different denominations! While the Orthodox continue to remain One Church.