This is just rudimentary scaling that can slightly change later as the store evolves.
SSS - ??? | ???
SS - ??? | ???
S -??? | ???
A - ??? | ???
B - ??? | ???
C - ??? | ???
D - ??? | ???
E - Block Level | ???
F - Building Level | < 900 GODs
G - Squad Level | < 300 GODs
H - Individual Level | < 100 GODs
I - Latent | < 25 GODs