This seems pretty close to mine. I use only Idaho potatoes though. I like Miracle Whip, but will use Dukes too. If I do, I put two tablespoons of sugar in it.
I also squirt mustard, about a tablespoon in any potatoe salad too.
The dills have to be hamburger dills to taste right though. Couldn't find the fresh dill and found that this works well.
You can cube or mash the potatoes lightly.
I like celery, but if I am out, don't taste any difference