The Highborn Rank has the following perks:

All of the Noble, Duke and Lord permission perks plus:

• 55 Tokens per chunk to claim
• 5 jobs
• 8 auction house slots
• 5 Cosmetic Preset Slots
• Can use /disposal
• 2 tool crate keys given
• Disguise into all mobs 1.16 and below 
• Corgi pet 
• Can select prefix colour by doing /prefix
• Able to use hex colours in chat, nicknames, and signs.
• 30 sethomes
• Access to /eglow 
• Access to /sit and /lay
• Exempt from AFK kick when server is full.