Sweeteners in soda

I’ve been wondering what the difference between diet beverages is; why is there a diet beverage and a zero or free option as well. I’m also including regular soda when I get a chance. I finally spent five minutes looking this information up, here’s what I found.

Table 1. Sweetener contents in soda
Beverage	Aspertame	Acesulfame Potassium	Sucralose	High Fructose Corn Syrup	Caffeine per 12 oz
Coca Cola Classic					34mg
Cherry Coke	No	No	No	Yes	34mg
Cherry Coke Zero Sugar	Yes	Yes	No	No	34mg
Diet Coke	Yes	No	No	No	46mg
Coke Zero	Yes	Yes	No	No	34mg
Pepsi					37.5mg
Diet Pepsi	Yes	No	No	No	35mg
Pepsi Zero Sugar	Yes	Yes	No	No	69mg
Dr. Pepper					41mg
Diet Dr. Pepper	Yes	No	No	No	41mg
Diet Cheerwine	No longer made?
Cheerwine Zero	No	Yes	Yes	No	47mg
Mountain Dew					54mg
Diet Mountain Dew					54mg