Satanism: This "religion" is not misunderstood whatsoever. It is literally the worshipping of the evil Satan. No normal person would ever worship something as evil as Satan.
Roman Catholic: Nah, catholicism isn't misunderstood, I live a catholic country and you wouldn't believe all the sex abuse scandals that appear each year
Mormons (Church of Jesus Christ of Latter Day Saints): The Church of Jesus Christ of Latter-day Saints, informally known as the LDS Church or Mormon Church.
Haitian Vodou: Haitian Vodou is an African diasporic religion that developed in Haiti between the 16th and 19th centuries