There are about a dozen or so, all variations of these basic ones, listed from lightest to darkest:
Candela (which is still green), Double Claro, Claro, Colorado, Colorado Maduro, Colorado Rosado, Maduro, and Oscuro.
Robert Burns Cigars and Cigarillos are a well-known brand that was featured prominently in mid-1900's ads. Constructed with a homogonized sheet wrapper and binder, the filler blend is made from Dominican and Honduran tobaccos to provide its exceptionally mild-bodied taste.
Oliva Serie O is made in the original Cuban tradition of growing the same habano seed in multiple regions of the country to produce a unique blend. The Serie O blend was achieved by groing Habano in Esteli, Condega and Jalapa Valley. Hand rolled with a Nicaraguan Puro filler and wrapped in the Sun Grown Habano. Medium to full bodied with hints of spice and rich cedar. Puros should age at humidity levels of 70-78% to preserve the natural oils.