This is another drawing by Ramón y Cajal of all the neurons found in the cerebellum. A is the purkinje cells I have talked about before. D are stellate cells, another type of neuron that can be excitatory or inhibitory, but are an inhibitory interneuron in the cerebellum. They are so named for their star-like shape due to their many dendrites. F are Golgi cells, which are also inhibitory interneurons in the cerebellum. These are located in the granule layer. H are granule cells, which are notable for being so very small and numerous in the brain- they also have a funky shape in my personal, nonscientific opinion. They are located in the granule layer of the cerebellum (unsurprisingly). S are basket cells which are also inhibitory interneurons and are all over the brain, but also in the molecular layer of the cerebellum.
You may have noticed a trend- inhibitory interneurons are greatly varied in type and are very numerous all throughout cortex. Each type serves slightly different functions and can elegantly inhibit neurons in different ways to promote the appropriate responses and keep the system running.