What I take issue with concerning "Christian denominations" is the premise that one can reach a divine truth about the Church by analyzing her as a strictly human institution. To me, the relationship between the human structure of the Church and the Spirit of Christ that animates her is analogous to the relationship between the man we call Jesus and the Divine Person we call the
Logos who hypostatically united Jesus to his Person. That is, Christ Jesus and His eternal Bride both are unions of human and divine elements.
Can we speak of Jesus as a man or the Catholic Church as a denomination? Yes, but IMO, our analyses would be similarly incomplete.