I don't buy pasta sauce because I prefer to make my own, but if I had some I would put it with the canned/jarred tomato products like tomato paste, tomato sauce, diced tomatoes, etc.
If it is an alfredo sauce, I have no clue where I would put it as we do not have anything like that here, except as separate ingredients.
I have my stuff separated by basic type:
seeds and nuts: sesame seeds, sunflower seeds, brazil nuts, walnuts, pecans, almonds, etc
Flours: whole wheat, AP, bread, graham, rye, etc
Sugars: white, brown, demerara, honey, molasses, maple syrup
Pastas: noodles, macaroni, capellini, bow tie, couscous, fettuccini, etc
Rice: Basmati, jasmine, arborio, long grain white
Seasonings: spices, herbs, salt, pepper, dried cayennes, seasoning blends, extracts, vanilla beans, etc.
Canned veggies: organized by variety-tomatoes, beans, artichoke hearts, water chestnuts, carrots, creamed corn, etc
Dairy: non-fat dry milk, powdered whole milk, eveporated milk, condensed milk, etc
Fats/Oils: lard, olive oil, peanut oil, canned butter, canned bacon
grease, etc
You get the idea.....I can be pretty AR when it comes to organizing, but I know where everything is and exactly where it is. I also keep a master list and add and delete when things are purchased or used.
Berta