Here are the UK figures for Cheerios multigrain and Quakers rolled oats. Cheerios have 17x the sugar. I think they used to be worse in the past before UK sugar regulations led to lots of changes to breakfast cereals.
I use 100g because they have different servings amounts. In the UK, the serving size is just 30g not 39g.
I would note that reducing such foods to tables can miss the point. They make me feel very different to eat. One is a very moreish sugary frankenfood that makes me lose control of my appetite. I can eat it by the box. The other is something that makes me feel good but if I make too much, I'm done and can't finish it. Eating an excess is physically hard.
I haven't seen a sugar-free variety in UK supermarkets. Standard Cheerios have always been sweet. I would call the "sweet" varieties things like Honeynut which have 22.4g of sugar per 100g.
The "low sugar Vanilla O's" sound ridiculous but contain comparable sugar to base Cheerios.† Presumably they have more vanilla flavoring.
† Which is to say, there's still a bit of added sugar, but not much, just like in the base Cheerios. (The rolled oats have no added sugar. The difference between "1g" of sugar in 40g of American rolled oats and "1.1g" in 100g of British rolled oats must be down to either different oats or rounding errors.)
I feel like the constant addition of relatively small amounts of sugar to random foods that aren't even supposed to be sweet might be a bigger issue than the inclusion of big heaps of sugar in foods that are supposed to be sweet. It's difficult to find beef jerky that is less than 10% sugar by weight. Rice Krispies are also 10% sugar by weight. There's no good reason for this.
If you ask for Cheerios in the UK, this is what you get. If you get an own-brand Cheerio knock off called "Hello Loops" or something, they will have also the same level of sugar.
Might explain some of the confusion in this thread.
I use 100g because they have different servings amounts. In the UK, the serving size is just 30g not 39g.
I would note that reducing such foods to tables can miss the point. They make me feel very different to eat. One is a very moreish sugary frankenfood that makes me lose control of my appetite. I can eat it by the box. The other is something that makes me feel good but if I make too much, I'm done and can't finish it. Eating an excess is physically hard.