Hair type chart/ hair care

Thanks for the link, but I have muchos problems with that hair chart. The 4a and 4b girl have type 3 hair. The type 3c woman has type 3a hair it is just highly textured but the curl is really loose and wavy. They poorly represented type 4 hair.

I think they confused texture (fine, medium, thick and prone to frizz) with the size of the curl. This hair typing thing has too many components. I think I have confused my own self. 

Can someone tell me where the official BHM hair chart is?

I did'ant know there was a 4c hair type. I'm a 4a, but the lady in the middle with 4b hair type also look 4a. I think some of these charts are confusing. I'm starting to believe that their are different textures of 4a. Cause I look 4a wet and 4b and 4a dry.