Need a way to organize templates within Brand

I'd like to be able to organize branded templates that our marketing team makes available to the instititution. Ideally, we could categorize templates by type so users looking for poster could skip directly to those templates without sifting through all templates. 

Currently, we've created a brand for each template type and link directly to each "brand" from our Sharepoint site. I'd prefer to have all templates under one brand with specified categories. Has anyone come up with a workaround?