There is a Catholic Kabbalistic thread from the Renaissance. People like pico della Mirandola refer to it directly and in positive terms, and others such as John of the Cross seem to be aware of Kabbalistic concepts. Mirandola was disliked by the Pope, but not for the Kabbalistic ideas he promulgated. I think a lot of Kabbalistic thinking can be found in many Catholic theologians and certainly artists and architects.
In a nutshell, Kabbalah is a philosophy of religion that contains elements of Egyptian/Hermetic thought and is applicable to both Jewish and Christian doctrine. It is very intellectually demanding and has so many branches that I’ve taken 15 years to sort decent sources from bad ones.
The main public proponents of Kabbalah in recent centuries have been either occultists or charlatans. I would generally recommend avoiding it unless you run across Christian Kabbalism via a deep study of Renaissance theology from a Catholic perspective, in which case you may find that some of the concepts of Kabbalah help with scriptural interpretation of number symbols (it’ll give you a whole new perspective on the book of Daniel) or application of scripture to daily life.
The modern pop Kaballah is all about a few “rabbis” making tons of money. It’s total garbage to be avoided at all costs.
Peace, love and blessings,