Lot of patterns ...
There are two patterns for Bengal : Marble and Spotted/Rosetted.
Marble Bengals have marbling pattern. Goal is to be close to Clouded Leopard pattern.
Spotted/Rosetted pattern is the most current. Spotted Bengal have solid color spots. Rosetted Bengal have two colored rosettes.
There are lot of sort of Rosettes :
Arrow Head Rosettes
Paw print Rosettes
... and colors
This patterns can be find in lots of colors. There are 3 basic colors : Brow, Snow (Lynx, Mink, Sepia) and Silver.
This colors can also be diluated, solid, charcoal and double Apb.