Which food has less impact on blood sugar?

FILLING BEEF BARBACOA [BEEF AFTER COOKING CONTAINS UP TO 14% OF A SOLUTION OF WATER, ORANGE JUICE CONCENTRATE, SPICES, FLAVORING, SALT, SODIUM PHOSPHATES, LIME JUICE, XANTHAN GUM, GRILLED FAJITA VEGETABLE BLEND [YELLOW ONION, GREEN PEPPER, RED PEPPER SEASONING MIX [SALT, MALTODEXTRIN, GARLIC POWDER, AUTOLYZED YEAST EXTRACT, ONION POWDER, SPICES, VINEGAR SOLIDS, LEMON JUICE SOLIDS, CITRIC ACID, NATURAL FLAVORS], SOYBEAN OIL), WATER, MODIFIED CORN STARCH, TOMATO PASTE, SALT, RED AND GREEN BELL PEPPERS CHILE POWDER [CHILE PEPPER, SALT, CUMIN, OREGANO, GARLIC), PAPRIKA, GRANULATED GARLIC, BLACK PEPPER, CAYENNE PEPPER), TORTILLA ENRICHED WHEAT FLOUR (BLEACHED WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID), WATER, MARGARINE (VEGETABLE OIL BLEND [INTERESTERIFIED SOYBEAN OIL, HYDROGENATED COTTON SEED OIL), WATER, SALT, MONO, AND DIGLYCERIDES, SOY LECITHIN, SODIUM BENZOATE [PRESERVATIVE], ARTIFICIAL FLAVOR, BETA CAROTENE (COLOR), VITAMIN A PALMITATE), DOUGH CONDITIONER (SALT, CELLULOSE GUM, WHEAT STARCH, SODIUM STEAROYL LACTYLATE, WHEAT GLUTEN, DISTILLED MONOGLYCERIDES, XANTHAN GUM, MONOCALCIUM PHOSPHATE, CORN STARCH, YEAST, L-SYSTEINE. DOUGH CONDITIONER (WATER, INVERT SUGAR SYRUP, PROPYLENE GLYCOL, CELLULOSE GUM), MALTED WHEAT FLOUR (ORGANIC WHEAT FLOUR, ORGANIC MALTED BARLEY FLOUR), VITAL WHEAT GLUTEN, DEXTROSE GUAR GUM, CELLULOSE GUM, DOUGH CONDITIONER (ENRICHED WHEAT FLOUR (WHEAT FLOUR, NIACIN, REDUCED IRON, THIAMIN MONONITRATE, RIBOFLAVIN, FOLIC ACID 2% OR LESS OF THE FOLLOWING SALT, ENZYMES), XANTHAN GUM, DOUGH CONDITIONER (WHEAT STARCH, CALCIUM CARBONATE, SILICON DIOXIDE [FLOW AID], L-CYSTEINE HYDROCHLORIDE). CONTAINS