Character Discussion Gorosei are based on the Chinese Zodiac

[Adeer Ruckus]

Th only one that doesn’t match is Ju Peter being a Worm instead of Sheep but his name is literally shepherd so that’s something.
Topman’s is associated with water (Fengxi/Hōki is a Rain God and lives in rivers) and Mars’ Yokai is associated with Fire (Itsudame spits flames)

 

[Adeer Ruckus]

Mars and Warcury’s Yokais being associated with water and fire respectively confirms this

 

[Shiroyru]

Jupiter isn’t a sheep
Venus isn’t a dog

 

[Adeer Ruckus]

Jupiter isn’t a sheep
Venus isn’t a dog

Jupiter’s name is Shepherd