Jon, as I’ve posted before, the Protestant churches basically do follow the creeds, except where the word “catholic” has been distorted over the centuries by the Roman Catholic Church to refer only to- the Roman Catholic Church. I hold to the original meaning of the word “catholic,” meaning “universal,” as in “the universal church,” which like it or not is much larger than just the Roman Catholic Church.
As far as the CCC, it has been compiled by fallible human beings, just as the statement of faith documents of other Christian churches have. So any unpacking of the Nicene Creed that has been done by RC bishops is just as prone to error as unpacking of the Nicene Creed by any other body of diligent, devoted erudite Christian scholars.
I realize you are a new convert and full of zeal to defend the RCC, but I think you are being defensive where no defensiveness is warranted.

The Roman Catholic Church is under attack from many quarters, however, it is not being attacked by me.