If you are actually asking for foods specifically identified as being "low carb" or "diabetic friendly", then you may need to tread very carefully as much of it may very well
not be. The only thing my diabetic nurse got right when she advised me on diet, was to avoid the stuff labelled as "DIabetic" like the plague, and I've seen specialist ready meals labelled and sold as "ketogenic" which have more carbs in a portion than I might generally eat in a day...
A large proportion of what we eat and can buy in most supermarkets or corner shops is perfectly suitable for low carb diets anyway, though not generally labelled as such. e.g. Ocado have an "Easy to Cook" range, many (but
not all) of which are quite suitable, and ready to pop into the oven or microwave. Just read both the full nutritional labelling and check the list of ingredients for any "nasties" then decide how it might fit in with your chosen carb levels and dietary choices.
I tend to agree with
@bulkbiker - I prefer to stick with the normal foods that I can buy for my low carb diet rather than wanting low carb alternatives to high carb foods, but I do actually include a few (what I consider "necessary") alternatives on my shopping lists.
Robbity