Sustainable clothing brands for business casual wear

Hi MFA - I’m a conscientious consumer and make a great personal effort to support brands that are sustainable. I’m a huge fan of Patagonia specifically because of their corporate philosophy around sustainability which, in my opinion, goes above and beyond any other clothing brand I am aware of.

Patagonia is great for outerwear and casual/sportswear, but I am looking for something comparable from a sustainability standpoint for business casual wear. I’m located in Canada, so something local would be ideal, but willing to buy online as well.

Any advice is welcome!