I think Vitamin Water is pretty good in terms of clean marketing, except they fail when you actually read the rubbish copy on the label.

https://www.thewrendesign.com/wp-content/uploads/2012/08/vit...

Tesco's old Value range was also pretty good for telling you immediately what's in it: http://www.s4rb.com/wp-content/uploads/2017/01/Old_Tesco_Val...