How many sects or different denominations does Mormonism have?

The Church of Jesus Christ of Latter-day Saints has no denominations or sects that it claims as part of it. There are several groups that have LEFT the LDS church, but they are not considered Mormons by the LDS church, even though some of them call themselves Mormons. The two best known are the RLDS (Reorganized Church of Jesus Christ of Latter-day Saints), now called the Community of Christ, and the FLDS (Fundamentalist Church of Jesus Christ of Latter-day Saints), which is in the news a lot presently. The FLDS is the group that is polygamous.