I am T2, controlled by diet and (not enough) exercise.
For me, there is no point starting a way of eating if it isn't
Enjoyable
Varied
Interesting
Satisfying
Sustainable
I consider the following to be great for me:
chicken, lamb, beef, turkey, pork, duck, salmon, shellfish, mackerel, tuna, herring/kippers, haddock - and the fats and oils they contain
Cream, cheese, butter, kefir
Any veg that grows above ground, in a range of colours and textures
Coconut oil, olive oil, nut oils
Seeds such as sesame, hemp, chia
Nuts and nut flours
Strawberries, blueberries, raspberries, temperate fruit if in small quantities
70+% cocoa solid chocolate
Erythritol
Green smoothies (don't have them often enough nowadays)
Herbs and spices and seasonings
I consider the following to be harmful and generally avoid them:
Plant oils like sunflower, rapeseed, soya oil
Starchy root veg
Grains
Milk
Fruit smoothies
All tropical fruit
Sugar
Caffeine
Agave nectar
Artificial sweeteners
Chemical flavours, colours, preservatives
I don't enjoy alcohol so never bother with it.
I enjoy coffee, so drink good quality water decaffeinated, with cream.