This is a survey of around 40 popular protein brands in India.
The results are very surprising. Here are a few observations:
Almost all flavored proteins have chemicals like xantham gum (INS 415), anti-caking agents, anti-foaming agents. So try to go with unflavored protein if possible.
The only flavored protein that is relatively cleaner is MyProtein, which does not have INS 415.
NakPro turns out to have the highest protein content at good price according to the survey.