I don't count leafy green stuff as I'd need to eat a bucketful to make any difference, so no count for courgettes, brocolli, cabbage, chicory, lettuce, cucumber, peppers etc. Olives, at soemthing like 3g carbs/100g - I'm not eating 100g of olives.
Tomatoes yes, peas/beans/lentils yes, roots yes, squashes yes - so that means that I'd count for coleslaw for example.
Nuts, generally no as the rise is too slow to make any difference, even with cashews which are quite high in carbs
Eggs, meat, fish (not vegetables, I know) but unless my meal is entirely made up of these, then I won't count. By experience a 3-egg omlette might raise my BG by about 1.0mmol/l, and it will then be back to the starting point by the next meal