It all depend which ones you choose. The simple black coffee ones have no sugar, then the milky ones vary, for example a cappuccino has 2.6g carbs, but a caramel latte has 10.6g carbs right up to the hot chocolate which has 20.4g !
If you want to look at all of them, I suggest downloading the app called Nutra Check.
Edit to comment on your edit! The L’Or XL intense are sugar free so you just need to consider the carbs in the milk you add.