I think this depends on some where you are brought up Rural vs City, farm family or not, maybe close to the borders of Iowa etc.
I to this day have still never had a Maid Rite from the restaurant. I grew up calling sandwiches made by frying loose hamburger with onion, ketchup, and mustard mixed in a pan and cooked, maid rites. We never really called them sloppy joes. That was something I never heard except from people in school or as I moved on and met more people from other areas.
I never had canned sauce or manwich or anything like that until I was out of high school and it was gross. I have had plain loose hamburger like they make at maid rite, then added ketchup and mustard after it was cooked and on the bun, it was ok, but that is just a ground up hamburger to me, not really any different, not a maid rite or sloppy joe as I consider it, just a loose meat sandwich.
The easiest and best Maid Rite/Sloppy Joe to me is still just fried loose hamburger, with the ketchup, mustard and onion cooked into the meat. Sometimes adding a little BBQ sauce of choice to the mix to taste.
But that is just my opinion. It is just how everyone grew up on this one.