Yeah, Amazon.com seems to have nearly anything available.
Nearly 20 years ago, I shared a shelter with 2 brothers whose suppers mainly consisted of Ramen noodles, sans flavor packet, topped with various instant bean soups.Reasonably cheap, filling, close to instant, and back then, a good variety was on store shelves. I didn't ask about GI distress, but their idea is worth considering. Instant split pea soup over instant potatoes with extra bacon or ham might be tasty on a cold or chilly night. Same for chili soup mix over inxtant rice with a side of cheddar. These should be easy to find in any grocery store whether supplying on the way to a hike or along the way.
Also, Knorr buying out Lipton sides fits my recollection.
Happy New Year!