Blimey, 3 pages of noise, and the answer is simple.
Get a source of genuine wholewheat flour, (or wheat grains plus a mortar and pestle) ... and make your own sourdough bread.
Once you learn the knack of making the sourdough starter mix, and build a wood-fired outdoor bread oven, you won't buy another loaf of bread.
Much better taste, texture, and your gut biome will flourish, keeping your insides tickling along.