White sugar is the sugar that white-collar workers have just become coffee drinkers. For example, sugar is slightly better.
Yellow sugar is a kind of healthy sugar, and the fusion degree of taste and coffee is the best among the three kinds of sugar.
Sweetner is specially made for diabetic patients, with low sweetness. If you think you are picky about sugar, you can choose this one.
The above is only my humble opinion, and does not represent the network position.