add dynamically created titles and h1s for brand filter the same way like Eric Busch from datafeedr did it on geargrabber.net?

View the code on Gist:

https://gist.github.com/EricBusch/b30e411a2442ab94a37c97235fecd80e.js?file=geargrabber-php-L134

e.g. https://www.geargrabber.net/category/mens-clothing/?filter_brand=carhartt

Another great option would be adding brand seo description on the main shop page when you click brand filter: shop/brand/paul-smith

Zalando does it this way.