I should have defined what "branding" was when I asked this question.
In my mind, Name.com is the best brand in the industry.
It has the best potential.
It can be a registrar, a @BrandBucket
-like marketplace, a brokerage, a trademark service, a business card printing service... anything related to naming your company.
I love Name.com as a brand.
And it's totally under-used.
It could be bigger than GoDaddy, in my opinion.