The Christian equivalent of the esoteric is rigorous, mind warping Aristotelian scholasticism that will singlehandedly give you mega schizophrenia (I’m recovering)
Discussion
It's honestly not that impressive. There's very little truly mindbending esoterica out there. Getting skullfucked by information is a skill issue
The scholastics were very impressive in their day, when epistemic questions hadn’t been asked yet. Mystics weren’t really though, mystics are all pretty much identical.