Which food has less impact on blood sugar?

POTATO FILLING (POTATOES, WATER, HALF & HALF CREAMER [MILK, CREAM, AND DISODIUM PHOSPHATE], PARMESAN CHEESE [PASTEURIZED PART-SKIM MILK, CHEESE CULTURES, SALT, ENZYMES, AND POWDERED CELLULOSE (ANTI-CAKING AGENT)], FOOD STARCH-MODIFIED, CREAM CHEESE [PASTEURIZED MILK AND CREAM (CHEESE CULTURE, SALT, STABILIZERS (XANTHAN AND/OR CAROB BEAN AND/OR GUAR GUMS)], SALT, UNSALTED BUTTER [PASTEURIZED CREAM], MARGARINE [PARTIALLY HYDROGENATED SOYBEAN OIL, WATER, SALT, SOY LECITHIN, VEGETABLE MONO AND DIGLYCERIDES, POTASSIUM SORBATE AND CITRIC ACID ADDED AS PRESERVATIVES, ARTIFICIAL FLAVOR, COLORED WITH BETA CAROTENE, VITAMIN A PALMITATE ADDED], XANTHAN GUM, CHEDDAR CHEESE POWDER [CHEDDAR CHEESE (MILK CULTURES, SALT AND ENZYMES), DISODIUM PHOSPHATE], BUTTER FLAVOR [WHEY SOLIDS, ENZYME-MODIFIED BUTTER, MALTODEXTRIN, SALT, DEHYDRATED BUTTER, GUAR GUM, ANNATTO AND TURMERIC (FOR COLOR)], GRANULATED GARLIC, LIQUID MARGARINE [PARTIALLY HYDROGENATED SOYBEAN OIL, WATER, SALT, SOY LECITHIN, VEGETABLE MONO AND DIGLYCERIDES, POTASSIUM SORBATE AND CITRIC ACID ADDED AS PRESERVATIVES, ARTIFICIAL FLAVOR, COLORED WITH BETA CAROTENE, VITAMIN A PALMITATE ADDED], BLACK PEPPER), COOKED POTATO SHELLS, TOPPINGS (CHEDDAR CHEESE [SHARP CHEDDAR CHEESE (PASTEURIZED MILK, CHEESE CULTURES, SALT, ENZYMES, ANNATTO COLOR), POTATO STARCH AND POWDERED CELLULOSE ADDED TO PREVENT CAKING, NATAMYCIN (A NATURAL MOLD INHIBITOR)], PORK BACON, [CURED WITH : WATER, SALT, SUGAR, SODIUM PHOSPHATE, SODIUM ERYTHORBATE, SODIUM NITRATE], CHIVES).