That is a terrific question, and it's almost impossible to answer. There are major clan families, and depending on how you call them, you could say there are four or five. However, each one of those clans is divided into an almost infinite number of clans and sub-clans. If you were to have them all charted, it would be like a Christmas tree extending downward almost forever.
On November 8th, 2017. See this statement in context.