You need to think about the food groups and a balanced diet up front. Meat, Dairy, Grains, Fruits/Vegetables, Sugars, and Fats. Try to have a solution for each.
Meat - There are lots of medium term solutions but for long term (10+ years) you are looking at freeze dried/vacuum packed options. This is one of the few places I recommend buying something prepackaged as a long term storage food. The big #10 cans of things like ground beef, taco meat, powdered eggs etc. are good choices.
Dairy - Again not a lot of choices. Things like condensed milk and Parmalat will get you out to 10 years. Beyond that your only option is powdered milk.
Grains - Grains and carbs are easy. Flour, oats, grains, rice etc. are all good choices. They all have 20+ years in a 5gal bucket with a desecant and an O2 absorber. Dried, powdered potatoes is also excellent.
Sugars - Per my post, granulated sugar
Fruits/Vegetables - Learn to garden and actually do it. You don't have to go nuts but at least grow a tomato plant and a cucumber plant or something. Get used to putting vegetables on your own table and have plans to expand your operations. Keep a stock pile of crop seeds. Get some #10 cans of freeze dried Fruits/Vegetables for a buffer but I am not a huge fan of how they prep. They are OK for cooking but its not fresh. Plan on being able to grow Fruits/Vegetables. If you have any land at all plant a few fruit trees. Apples and Cherries are easy to care for and have big yields.
Fats - Fats are a challenge. Fats are essential to good diet and fats spoil quickly. Be prepared to Hunt. That is the only real solution, but you can offset this to some degree with vegtable oil, olive oil, coconut oil, and lard.
I'm fucked then I can't eat grains as I have coeliac disease, I can't stomach meat and I hate dairy Not joking.
You just said "I can't eat 3 of the four food groups." How are you alive?
I tried eating meat a few years ago and even with digestive enzymes I just couldn't stomach it. Coeliac disease is a fucking curse though and attempting to get dietary advice from the medical mafia is pointless, they are fucking clueless and I suffered needlessly with coeliac for decades. As you know, the damage caused to your gut by gluten doesn't always heal when you stop eating it. My gut can't handle milk (apparently that's common in coeliacs?) but I do use organic butter daily. If you have any tips, they will be gratefully received. You seem pretty knowledgeable.
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