I'd rather view the lists by brand rather than having to click into each one to see what brand it is part of. Also, if two brands have the same or similar list names, it's easy to get confused between the two without breaking up the view by brand.
You can create folders on the list index page. Put your brand lists into those folders, will be more organized and eas to track.
Thanks for the tip, but I'm not seeing how/where to create folders.
Here's a screenshot. I hope this helps.