Using a broad definition, they would all be cults.
Anyway, while their are the big five, we can't forget that those big five also have numerous sub-religions. Generally, the sub-religions are regional - Ideology in a area differs from another, so the message is changed to appeal to those area's.
Frankly, I consider Religion to be one big joke/scam that has been duping people over for a very long time. You don't have to look into them real deep to see this either - The subgroups per main religion, and even the number of main religions, is proof enough of this.