Which would say sounds like a better name? -General Partner -Global Partner -Top Partner -Main Partner -Exclusive Partner
Since you're already using metals for naming your packages: Bronze, Silver, Gold, Platinum...it only makes sense to add a Titanium package.
The names you are suggesting are good, but you'll need to change your naming convention to something like: Basic Partner, Standard Partner, Collaborative Partner, Exclusive Partner... Keep all naming conventions the same.
I hope this helps.