You're in good company with Perigee. Over the years, we've developed great relationships with the top manufacturers and brands in the space. Here's a current snap shop, all clickable for quick-access to their catalogs with us. We're constantly adding new partners.
You do not have a link list with a handle set to brands, or you do and it's empty. Go ahead and create a link list called Brands on your Navigation page and populate that link list with links that point to collections, to see collections listed here. Make sure the link list also has a handle set to brands.