Kindest Regards, Brian!
<sarcasm>What, the consumer be responsible for their own choices?</sarcasm>
Actually, I think it is a good idea, but a lot depends on how much genuinely informed input gets provided from interested participants. I never got that involved myself, there is a certain degree of comfort in ignorance. I accept as a rule that if something is processed, it has a horror story behind it, ethical commercial intent or otherwise. Likewise, it is difficult to accept on faith the packaging and labels that claim "organic" or "hormone free" or some such. I kind of accept that, backed into a corner, a business will do what it must to survive.
The only way a person can have any reasonable assurance that what they eat or consume is "ethical," is if they grow and / or make their own. Which, in this day and age, is impractical for the vast majority of us who have to make rent / mortgage and utility payments.
I guess what I am trying to say is that the list you propose must be viewed as relative and subjective, rather than an endorsement for (or indictment against) specific companies. An important consideration right out of my business text, is that a company needs to appear ethical, even if behind the scenes it isn't quite. It is the image the consumer has in their mind about the company that matters. Spread a few bucks around in the right places and promote the appearance of ethics / morality / charity / quality / etc, and what goes on in the back room or the factory really doesn't matter. The consumer buys into an illusion.
Do I sound a little jaded and critical?
Of course, this is but my opinion. Others may well view this whole subject entirely differently, and to that end I hope you get significant contributions from the CR participants.
My first and likely only contribution to the list is:
Homegrown is best.