Official sponsor is "under" other types of sponsors.
Official Sponsor
Under Title, Presenting and Major sponsors. This often refers to the most basic sponsorship status. Below officials sponsors, are usually found suppliers and media partners, with substantially less rights than their counterparts.
https://en.elevent.co/blogs/sponsorship/sponsorship-glossary"Title Sponsor / Presenting Sponsor:
The Title sponsor is typically the sponsor given the highest presence at the event. The Title sponsor typically has naming rights to the event and gets the maximum deliverables and branding that can be offered. Title sponsors are typically recurring sponsors and partner with an event across multiple years thereby establishing a sync and emotional connect with the event. "
https://www.quora.com/What-is-the-difference-between-a-title...http://nuclearlatin.org/sponsorship-options/