Sugar is really tough because a lot of popular items have much more sugar than most people realize. Consider this label of 2% Kroger milk[0]. That's 12g of sugar in one cup. If you stick two cups in your cereal, that's nearly 2/3 of the way to a can of coke and that's before you even consider how much sugar is in the cereal itself.
Many products have a great deal of added sugar, but the sugar in milk is naturally occurring lactose. It would be better to remove the breakfast cereal from your diet than the milk.
Agreed. There are over 50 different names for sugar that the FDA will accept on the ingredients list and you can bet your ass the food manufacturers will take advantage of that.
I saw a popular granola bar once that listed four different kinds of sugar as the first four ingredients. Of course, the rest of the packaging touted the bar as being "healthy"
If you like milk, ultrafiltered milk (Fairlife is the big national brand, though I think there are some smaller brands) may be a good option here; its more expensive, but has less sugar (and not with any substitution).
[0]https://www.kroger.com/product/images/large/left/00011110416...