I used to work with a Mormon and a 7th day adventist. I was unaware of the Mormon’s beliefs aside from the fact that he bought juice rather than soda. The Adventist beliefs were far more obvious due to his dietary requirements and the fact that he had to work a half shift on Friday to be home before sunset.
Both were good enough guys, they just had somewhat unusal beliefs that were different from what I experienced in my Methodist upbringing. I suppose I could also include Catholics in those with unusual beliefs.
At the end of the day it really doesn’t matter. Good folks are good folks.
Both groups are into legalism - doing RIGHT (as their group defines it) to stay on GOD's good side.