My favorite Xianxia are
Legend of Shen Li
Back from the Brink
Love Between Fairy and Devil
Love and Destiny (2019)
Part 3 of Pillow Book (not a fan of forgetting a whole life thing like when Imperial Lord was in the mortal realm)
The first 3 are based on books by the same author - I love that there aren't any betrayals, the couples trust each other and most of the angst comes from the situations/outside sources. What other Xainxia lean toward more of the romantic comedy aspect? Happy Ending is a must.
TMOPB - I had to drop when she decided to leave her kid to a bunch of people she didn't trust or like and jumped. If she didn't trust him enough to wait for him to get back and find out what was going on, then he wasn't worth ruining her life for.