Most berries surpising have lower sugar with the expection of blueberries, you have to also consider that 1 cup is called a sugar you can cut the amount of sugar by simple cutting the portion size.
is called a serving* (sorry dyslexic) lol
You should look at the glycemic load of foods, which takes into account the sugar and nutritional value according to carbohydrates (this is what effects insulin spikes). All berries, as well as peaches, grapefruits, plums, raw cherries, and kiwi are low on the glycemic load index! Hope this helps
Are these children diabetic? I wouldn't restrict children from having a large variety of nutritional fruit of different colors (which translates to varied nutrients.) I would just monitor portion size and how many servings per day. Here are 3 fruits with reasonable amount.
Apples are a healthy fruit full of pectin and fiber that helps moderate sugar in the bloodstream.
Cantaloupe is full of vitamin C and beta carotene.
Berries contain antioxidants.
Also good: pears, cherries, grapefruit is a little tart for kids