Layer lettuce and then spinach in the bottom of the bowl. Reserve some of both to build up the center so the rest of the ingredients can go along the side of the bowl.
Radishes are the next layer. Spinach and lettuce are mounded in the center.
Continue layering the next four ingredients in order concentrating them on the outside of the dish. The cheese is spread over the entire dish in an even layer. Peas go on top of the cheese and the peas evenly cover the cheese. Mix together mayonnaise, Ranch dressing and sugar. Pour over the peas. Cover and refrigerate overnight before serving. Some recommend tossing the salad before serving. I don't ever do that. I let folks serve themselves and get as much or as little of the dressing as they prefer. That's the way I roll.