What is the difference between regular potato salad and Amish potato salad

I've been told it is a different bite due to the addition of vinegar and assorted other items. I know when I had some once I didn't care for it much, it was too vinegary. But then again I'm simple when it comes to what I like in my potato salad. Potatoes, mayo (or miracle whip), spicy brown mustard (like guldens), raw onions, hard boiled eggs, some ground pepper and kosher salt, a dash of cayenne or other pepper seasoning and a bit of horseradish sauce.