But I don't even know if my comparison is correct from a theoretically point of view. Because the Ahmadis basically believe that Prophet Muhammad (saws) who we Muslims deem as the last messenger of Allah (swt) (God) while they believe their Prophet "Mirza Ghulam Ahmad" who was born in 1835 was the last Prophet.
This is like if Christians did not believe that Jesus or Isa (as) as we Muslims call him was not the son of God.
I don't really know about the exact believes of Jehovah's Witnesses or Mormons or whether or not they hold as extreme views that differ from the traditional Christian predomination's such as Catholicism, Orthodoxy, Protestantism etc.
BTW, is Idaho not part of the Mormon belt partially?