The problem is that "Chinese folk religion" is divided into 2 in-game : Confucianism & Taoism.
Unlike the Abrahamic religion, where Islam is Islam, Catholic is Catholic etc.. Chinese folk religion is syncretism of Confucianism, Taoism and Buddhism itself.
It is possible imo to remove both Confucianism and Taoism; and added Chinese folk religion instead with Tao symbol (which is better according to Leoreth) BUT I think it's un-aesthetic having religion with names that long. (and Leoreth want to keep Chinese UHV, let's don't broke more records

)
So I think I will suggest the following minor religion :
- Tengriism :
TARGET CIV = Mongol
SPREAD AREA = Central Asia, Mongol
- Judaism :
TARGET CITY = Jerusalem
SPREAD AREA = Sporadic in Western Asia, North Africa and Europe
- Taoism :
TARGET CIV = China
SPREAD AREA = China, Southeast Asia
- Sikhism
TARGET CIV = India
SPREAD AREA = Northern India
- Manichaeism
TARGET CIV = Middle East
SPREAD AREA = Babylon, Persia, China, Egypt, Rome
Spread impossible after Islam
- Hellenism
TARGET CIV = Alexandrian Empire
SPREAD AREA = Greece, Alexandrian Empire and Greece Colonies
- Shiite
TARGET CIV = Iran
SPREAD AREA = Egypt, Iran, Iraq, Syria
Well that's my revised list suggestion for Minor religion.
What do you all thinks? Perhaps I missed something major...