An interesting question.
Full fat milk 5 gms per 100 ml. Yogurt 3.6 gms per 100 gms. Seems low fat yogurt has a bit more. So by my definition, relative to the skimmed milk and 0% Greek yogurt that I usually eat and baring in mind how much I ate, not relatively high at all. If I was going for zero carbs I might call it relatively high.
It doesn't matter how many carbs there are in something if your individual body cannot tolerate that number of carbs, or that particular food.
I see people say 'I went low carb and ate 50g carbs a day (or 20g, or whatever), but it didn't fix me.'
Well no. That many carbs wouldn't fix me, either. My body needs much lower than that. We are all individual, and that individuality doesn't necessarily mesh with a number on a food packet label, or what works for other people.
For me, it is a v simple thing. Carbs + fat = weight gain
unless I lower the carbs enough. (and the whey and carbs in the milk and yog you mention would be
too much)
or I lower the fat enough (and I am never going low fat again, because my body and my mental health suffer)