Which food has less impact on blood sugar?

MEATLOAF (GROUND BEEF, GROUND PORK, WHOLE MILK [MILK, VITAMIN D3], TOMATO KETCHUP [TOMATO CONCENTRATE {MADE FROM FRESH RIPE TOMATOES}, SUGAR, DISTILLED VINEGAR, SALT, ONION POWDER, SPICES AND NATURAL FLAVOR], BREAD CRUMBS [WHEAT FLOUR, SUGAR, YEAST, SALT], WHOLE LIQUID EGGS [WHOLE EGG, CITRIC ACID, 0.15%WATER ADDED AS CARRIER FOR CITRIC ACID, CITRIC ACID ADDED TO PRESERVE COLOR], SOY SAUCE [WATER, WHEAT, SOYBEANS, SALT LACTIC ACID, SODIUM BENZOATE {LESS THAN 1/10 OF 1% AS A PRESERVATIVE}], SALT, WORCESTERSHIRE SAUCE [DISTILLED VINEGAR, MOLASSES, CORN SYRUP, WATER, SALT, CARAMEL COLOR, SUGAR, SPICES, ANCHOVIES, NATURAL FLAVOR {CONTAINS SOY} AND TAMARIND], GRANULATED ONION, GRANULATED GARLIC, BLACK PEPPER, GROUND MUSTARD), MASHED POTATOES (POTATOES, MILK, MARGARINE [SOYBEAN OIL, WATER, SALT, HYDROGENATED COTTONSEED OIL, SOY LECITHIN, VEGETABLE MONO AND DIGLYCERIDES, ARTIFICIAL FLAVOR, VITAMIN A PALMITATE], WATER, SALT, BUTTERMILK, PRESERVATIVE BLEND [ARTIFICIAL COLOR, POTASSIUM SORBATE {TO PRESERVE FRESHNESS}, SALT, SOYBEAN OIL], NATURAL FLAVOR, SODIUM ACID PYROPHOSPHATE).