Simply Pop

Coca-Cola's entry into the category under its Simply brand, and the one that stretches the definition of soda furthest. It carries several grams of prebiotic fiber along with vitamin C and zinc, and leans harder on real fruit juice than most sodas here, sweetened with monk fruit rather than added sugar. That juice content is both its appeal and its problem: critics have noted it reads more like a juice drink than a soda, even while finding it enjoyable on its own terms. Coke's own positioning centers the fruit juice, which tells you what to expect, including a higher natural sugar count than most sodas on this list, even with no added sugar. Buy it for fiber; skip it if you want a cola substitute.