I'm non dénominationel Christian and id be interested by any kind of christianity inspired works, be they catholic or protestant or whatever.

Same for all religions: buddhism, islam, anything religious.

If not religious but spiritual and exceptionnal like PKD's gnosticism, Im also curious. Not only for the gnosticism, but the whole doubting if some things experienced during psychosis are not all batshit-land, so I've also put Jung in my to read list, but let's keep it sci-fi.