I really love learning about different mythologies and seeing them incorporated into paranormal stories. Some of the ones I've been curious about (to name a few!) would be Navajo, Aztec, Maya, Incan, Korean, Chinese, Japanese, Russian, types of mythologies found in Southeast Asia...I've found a few books in these areas like Gilded by Christina Farley for Korean folklore and Eon/Eona by Alison Goodman influenced by Chinese legends, but I am always out to discover more.