Some of them are over 1000 years old, so they cant be new age. It is ancient Celtic art style used to glorify Christianity, Catholics I mean.
I agree that Celtic art is Christian, ie Catholic,.
A little off topic but just to correct the belief that new age is something new, although there has been a recent resurgence. It goes way back to Ancient Greece, Gnosticism, Jєωιѕн mysticism and the Kabbalah, maybe even to the Garden of Eden (your eyes shall be opened: and you shall be as Gods, knowing good and evil. - Gen 3:5)