The way I have setup my housing areas is a grid of 9 by 9 houses around a market and a shrine in the middle of side of the perimeter of this grid. See in the photo.
This layout I have it repeated 3 times. A total of 12 upgraded shrines.
I also have the upgraded temple.
Spirituality need is stuck at 75% though, I am not sure what else to do to go to 100%
Any ideas?
Im also stuck around 76%, although I have like 9 altars and an ungraded temple. Adding additional altars does nothing to increase desirability.
Well, have you ever considered that 25% of your villagers just simply don’t want to be spiritual? 
LOL, good answer
军营；箭塔；渔屋；猎人屋；避难屋也受灵性影响，
I’ve found out what the problem is.
If you are interested I submitted a bug here
https://forums.crateentertainment.com/t/v0-9-1p4-spirituality-amount-calculated-incorrectly/131543?u=dwpk20
