Barleywine
The CC seems to have been introduced by W. B. Yeates. Waite describes it in PKT, but in any case he is abivalent about the divinatory use of Tarot, particularly the Trumps.
To some extent Waite de-Christianized Tarot compared to the historical decks of the time, such as TdM. Christianity, rightly understood, is not the bad guy anyhow. The problem is with the institutional form of it. As Waite writes in The Hermetic and Rosicrucian Mystery (1908):
...The difficulty which the [Latin] Rite has created and the inhibitions into which it has passed arise more especially not alone on the external side but from the fact that it has taken the great things of symbolism too generally for material facts. In this way, with all the sincerity which can be attached to its formal documents, produced for the most part by the process of growth, the Church Catholic of Latin Christianity has told the wrong story, though the elements which were placed in its hands are the right and true elements. I believe that the growth of sanctity within the Latin Church has been- under its deepest consideration-substantially hindered by the over-encrustation of the spirit with the literal aspect....
" . . . over-encrustation of the spirit . . ." I like that! Score one for Mr. Waite. The institutional form is indeed the problem. I think it misses (or intentionally conceals) the point that most if not all of the "dying god" religions are based on the seasonal cycle of the Sun, which "dies" (or perhaps "commences dying") at the Autumnal Equinox and is "resurrected" at the Winter Solstice.
In another thread, Tehuti (mkg) stated that it may have been Florence Farr who introduced the Celtic Cross. Marcus Katz thought it was F. Leigh Gardner.