Which food has less impact on blood sugar?

FLATBREAD (WATER, ENRICHED WHEAT FLOUR (WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMIN MONONITRATE, RIBOFLAVIN, FOLIC ACID), ORGANIC WHOLE KHORASAN FLOUR, BREAD BASE (WHEAT GLUTEN, TAPIOCA STARCH, OAT FIBER, WHEAT PROTEIN ISOLATE, SUNFLOWER OIL, WHOLE WHEAT FLOUR, SEA SALT, SESAME FLOUR, 2% OR LESS OF: CALCIUM SULFATE, ENZYMES), OATS, CONTAINS LESS THAN 2% OF: RAW SUGAR, YEAST, SEA SALT, SUNFLOWER OIL, OLIVE OIL, NATURAL MOLD INHIBITOR (CULTURED WHEAT FLOUR, VINEGAR), SODIUM BICARBONATE, FUMARIC ACID, CALCIUM SULFATE, ASCORBIC ACID, ENZYMES), CAGE-FREE* EGGS (EGGS, WHOLE MILK, NON-GMO CORN STARCH, SEA SALT, WHITE PEPPER), ORGANIC ROASTED RUSSET POTATOES (ORGANIC POTATOES WITH ORGANIC OLIVE OIL), WHITE CHEDDAR CHEESE (PASTEURIZED CULTURED MILK, SALT, ENZYMES), WHITE CHEDDAR CHEESE SAUCE (WATER, WHEY, NON-GMO CORN STARCH, WHOLE MILK POWDER, NATURAL FLAVORS, SALT, CHEDDAR CHEESE [CULTURED MILK, SALT, ENZYMES]), ORGANIC RED PEPPERS, ORGANIC GREEN PEPPERS, PEPPER JACK CHEESE (PASTEURIZED CULTURED MILK, JALAPEO PEPPERS, SALT, ENZYMES), MONTEREY JACK CHEESE (PASTEURIZED CULTURED MILK, SALT, ENZYMES), ORGANIC ONIONS, ORGANIC JALAPENOS, NON-GMO CORN STARCH, SEA SALT, BLACK PEPPER.