Non-GMO. This just means it doesn't have corn or soybeans.
Gluten free. No wheat.
All natural. This means nothing at all. The makers of 7-Up claim soda is natural because the enzymes used to make high fructose corn syrup are natural.
Fat Free. Probably lots of sugar.
No High Fructose Corn Syrup. Uses sugar instead of HFCS.
No MSG. MSG isn't harmful.
No nitrates. Often they just use "celery juice" which is naturally high in nitrates.
I once saw "dehydrated cane juice" listed instead of sugar. Come on!