Prepare Simply Spuds(TM)Steamables(TM)Golden potatoes according to directions on back of package.
Allow potatoes to cool.
Peel and cut potatoes into cubes.
In a large combine potatoes, hard boiled eggs, celery and green onion.
In a medium sized bowl prepare the dressing by combining Hellmann's Mayonnaise(R), Miracle Whip(R) Salad Dressing, sour cream (optional), dijon mustard, yellow mustard, white wine vinegar, garlic powder, celery salt, salt and pepper.
Gently fold dressing into potato salad until fully incorporated.