I hate to pour cold water here, but a stock I believe in is one that financially performs well. It doesn't matter what the mission statement or philosophy behind it is. I think all those intangibles are highly overrated as an actual concrete $-demonstrated strategy for investing.
I find very mixed / uncorrelated results of companies emphasizing ESG issues leading to good financial performance. Larger factors control a company's fate.
Shareholder pressure on such issues rarely is a major factor in producing the ESG outcomes envisioned. More often it's broader market or social changes that lead companies to change, not the shareholders (even large institutions) buying or selling their stock for "moral" reasons. Divestment campaigns, for example, are rarely the thing that actually bring down a company or country -- their fate was already written elsewhere. With that in mind, what is the chance that my 100 shares are worth anything in terms of company direction.
Now, that said, I'm not going to invest a company that does illegal things. Nor am I interested to invest in coal companies, for example. I don't want to add to our global warming problems, even in the small ways that I personally have control over. But those companies were already doomed by each and every one of our choices about how to buy energy, the cost of natural gas, alternative energy generation costs, and the economics of coal-fired power plants tanking the demand for coal.
I would rather use my money to influence the regulations and government policies that corporations act under. I wish you luck, if for nothing else than to see if your model can gain traction and do something positive!