Mormonism is absolutely a cult.
Temple Mormons are taught there are multitudes of other gods on other worlds that they created.
To Christ and Satan are brothers born to a God and one of his wives on another planet.
The holy underwear, secret vows and other things it seems so outlandish are actually true and taught in the temple.
A temple Mormon marries many women in a celestial temple ceremony so as to be able to produce enough offspring to populate their planet if they achieve godhood.
Such a wife is dependent on her husband to call her out of the grave and resurrection.
You and I have spirits that were produced by sexual intercourse of God the father and wanting his wives. Later we were sent into human mothers to produce our physical bodies. Of course, you don't remember your preexistence.
Salt Lake City Mormons stopped polygamy due to political pressure. They now admit Blacks political and social pressure.
The book of Mormon is another part of the Bible in their beliefs.
Of course you have to become a temple Mormon learn all of this. And only men can become Temple Mormons.
The Book of Mormon claims there were horses, elephants, pigs and other animals in the Americas that never were here in old OT times.
It also claim they had transparent glass, which in fact was not invented until centuries later.
They also believed American Indians were Jews who journeyed here in BC times. Which science has will blown out of the water a long time ago.
Being half Indian I always knew the claim was nonsense.
They teach the New Jerusalem will be in Independence, Missouri.
The actually began building The temple but were evicted.
You may find this interesting:
Differences between three different types or Mormons
Jackson County temple lot saga