I see you just joined HP, and asked this in another forum as well.
Please read the label on Crystal Light. If you don't know what most of that stuff is, then you have your answer.
Canned fruits &veggies: packed in water, not syrup. It is hard to tell if any is GMO because we don't have labeling laws in USA yet.
Potatoes are GMO in most areas of USA as I understand it. If someone knows differently, please correct me. I do not know if sweet potatoes are GMO either. Sorry