Which food has less impact on blood sugar?

FILLING (HAM, WATER ADDED (CURED WITH: WATER, SALT, POTASSIUM LACTATE, SODIUM LACTATE, SUGAR, SODIUM PHOSPHATE, SODIUM DIACETATE, SODIUM ERYTHORBATE, SODIUM NITRITE), EGG PATTY (WHOLE EGGS, NON-FAT MILK, MODIFIED FOOD STARCH, SALT, XANTHAN GUM, CITRIC ACID, BLACK PEPPER), CHEDDAR CHEESE (CULTURED PASTEURIZED MILK, SALT, ANNATTO, ENZYMES), NATAMYCIN (A NATURAL MOLD INHIBITOR), SOY LECITHIN (NON-STICKING AGENT)), DOUGH (ENRICHED FLOUR (WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), WATER, DOUGH CONDITIONER (RICE FLOUR, SUGAR, SWEET DAIRY WHEY (MILK), VITAL WHEAT GLUTEN, SALT, INTERESTERIFIED SOYBEAN OIL, POWDERED CELLULOSE, SOY FLOUR, CALCIUM PROPIONATE, DIACETYL TARTARIC ACID ESTERS OF MONO AND DIGLYCERIDES (DATEM), SODIUM CARBOXYMETHYLCELLULOSE, DEXTROSE, MONOCALCIUM PHOSPHATE, AMMONIUM SULFATE, CALCIUM SULFATE, ASCORBIC ACID, L-CYSTEINE, DOUGH CONDITIONER (WHEAT STARCH, AZODICARBONAMIDE (A.D.A.), TRICALCIUM PHOSPHATE, SILICON DIOXIDE (USED AS A FLOW AGENT)), BUTTER, EGGS, NONFAT DRY MILK SOLIDS (NONFAT DRY MILK, LACTOSE), BUTTER FLAVORED PALM FLAKES (PALM OIL, SOY LECITHIN, ARTIFICIAL FLAVOR, BETA CAROTENE), GRANULATED SUGAR, ALL PURPOSE SHORTENING (PALM OIL), YEAST (YEAST, SORBITAN MONOSTEARATE, ASCORBIC ACID), BAKING POWDER (SODIUM ACID PYROPHOSPHATE, SODIUM BICARBONATE, CORN STARCH, MONOCALCIUM PHOSPHATE), SALT).