That is some weird and unhelpful mixing of units. There is no way to look at that data and work out which food has the most potassium pr. gram. At a guess a "me

That is some weird and unhelpful mixing of units. There is no way to look at that data and work out which food has the most potassium pr. gram. At a guess a "medium" banana is possibly 1/3 - 1/2 cup raw, maybe less if cooked down? If that's the case it jumps to the top of your list again. And the "1 cup" of cooked chard, is that 1 cup pre or post cooking, packed or loose or perhaps pureed. The difference in weight between 1 cup loose raw chard and 1 cup cooked pureed chard is probably a factor of 10 if not more.