Here is a bacon cheeseburger option
https://grillhunters.co/potato-skin-cheeseburger/
There was another idea of using smoked brisket and a cheese sauce....unfortunately I don't have the exact recipe to share, but that should give you a start and can go from there.. I'd probably add in some grilled onions maybe mushrooms & peppers too for a cheesesteak type.

There's always the option of topping a potato with chili or veggies like broccoli and a cheese sauce.
I keep thinking I'm going to do this more often, but never do. Except tonight I AM doing the cheeseburger thing cause I have everything for it and can't wait to try it.

But does anyone else have other ideas you've tried & liked??? Please share