There are a few things to notice when reading baby formula labels. First, maltodextrin is made from the starch in food, but not all starches are maltodextrin because of its processing method.
For example, HiPP HA Stage 1 lists starch as an ingredient, but it is whey, which is a derivative of cow milk starches. Starch must undergo a hydrolysis process before turning into maltodextrin.
If you notice a baby formula label has starch, do not panic that it is maltodextrin. Starch is added for several reasons, including to thicken products, add carbs, provide an energy source, or to substitute sugar and avoid glucose levels rising.
Starch is a complex carb, and babies need them to develop and reach growth milestones. To avoid starches, try out HiPP Stage 2 No Starch.