It's honestly hard to separate out companies who are genuinely making a decent effort to not be completely terrible versus those that are just green- or ethical-washing their practices as a marketing tactic. Furthermore, I realize that reducing consumption itself is the most sustainable choice one can make, so I'm asking this more as a "when I do need to buy something, what's a good place to turn to?"

Feel free to give recommendations for any areas, but in particular I'd love to hear about recommendations in the areas of clothes, linens/bedding, and coffee beans, as those are things that I'm currently on the market for. Also, if there are any good resources that aggregate reliable information about sustainable companies, let me know too.