I do, obsessive hand washing learned from my mom. I am now downgraded to the normal range, other people don't notice.
I need to load the dishwasher a certain way & always run it full. If I find someone has run it partially loaded , I'm a little flustered. Years back I would have had a major melt down.
Laundry must be sorted my way and full loads only.I can now do a load of a few things if I need to.Only mildly irratated if someone else does a partial or mixed load.
Locking & rechecking doors was also a big problem, but I've over come that.Haven't locked my husband out of the car while he pumps gas in years.Locking the doors bothered him more than finding them unlocked did me.
There were other quirks but it's been so long I can't recall them.
Therapy for PTSD and leaving the cult helped . I don't think their is any harm in these behaviors if they don't interfere with your life.I do think they can be a warning sign something is wrong.
BF