The Mormon religion at least started with some great Sci-Fi writing! An angel with golden plates written in Egyptian heiroglyphs, special glasses that, when you put them on, automatically translate for you! Wow! Great stuff.
C.T.Russell had his pyramid gizmo; but, it was not at all original to him. He was just suckered in by it and returned the favor to other hapless rubes.
Mormon's have mysterious rituals they get to observe at the temple with secret dramas portrayed to them as hermetic knowledge. They get special underwear too!
JW's have the weird Lord's Supper ritual that only the special anointed can "partake" of. How they know they are anointed is all goofy double talk.
Mormons can be in politics and JW's had to go to prison rather than serve their country.
Mormons minister as missionaries for 2 years; but, JW's have the dork-to-door work a lifetime.
One similarity that comes to mind is this. Mormon's have their own bible substitute: The Book of Mormon and the Pearl of Great Price. JW's have the NWTranslation. All the aforementioned are mostly works of fiction.
Mormon's have a support structure for the rank and file. JW's have nothing.
Mormon's receive "revelations" from their governing body. So do JW's but it is very mysterious what the process is. New Light comes from somewhere/somehow but it is never explained. Mormon's come right out and call it prophecy. JW's, always proved wrong, call themselves latter day "prophets" but always put the word in quotation marks !
When I was an active Pioneer as a JW the toughest debates I ever had were with Mormons. They were sharp! Indoctrination in the Mormon church is every bit as good as among JWs.
Terry