There has been new legislation passed that starting..next year?..labels will have to show total sugar and added sugar, so you can realistically get a sense of how much is original vs. additive.

Yeah I get that, it's just that you can already tell if something like plain yogurt has added sugar or not. In my experience, most brands list milk and the bacteria cultures.

I guess varying the preparation of the yogurt can still result in a wide range of sugar content.

That's a great point. I just checked and it doesn't list it. I don't know why I never thought of that.