Red,
Thanks for bringing this up because it has brought a smile to my face.
When I was a kid, my dad and I would stop at "White Manna" pretty much each weekend on the way to the boat house. I'd have three or four "with the works!" That meant a slice of cheese, onions, and pickles. LOL.... add your own ketchup.
Man... they were meatball sized sections of chopped meat, laid out on a grill right in front of you, smashed flat with a spatula, and then covered with shredded onions. Once they were flipped, ( he could do about 30 at a time) the small soft (later potato) rolls were placed on top and heated, and steamed with the moisture coming off of the onions, and with the grease coming off of the burgers. Three slices of pickles, and a squirt of ketchup... heaven on a bun!
That was in Jersey City, New Jersey. It's still there! IIRC it came from the NYC 1939 "World's Fair" ... The diner of the future. Now that I looked for some pictures. The guy from Diner's, Drive-throughs, and Dives, stopped in and did a review.
A couple of years ago, I stopped into the Hackensack, NJ White Manna, with my very picky eater grandson. He had a couple with onions, no pickles... then he had a couple more!

It made me Happy to see him enjoying it so much.
https://en.wikipedia.org/wiki/White_Manna
https://www.yelp.com/biz/white-manna-hackensack
On the other end of the spectrum... gourmet.
At the Northern end of Greenwood Lake (which is part NY and part NJ) there is "The Helm"
Jen, the owner, and Culinary School trained executive Chef makes burgers to die for.
Smoked pulled pork, with layers of cheese, and two kinds of pickled coleslaw, topped with her special sauce, and any variety of cheeses. Wrap your senses around one of those, coupled with a dark flavorful porter beer.
ARRGGGHHH!!! 40 minutes away, and take-out only because of Cov -19
Soon... soon.
https://www.thehelmny.com/
https://www.yelp.com/biz/the-helm-greenwood-lake-3