Here's my suggestion:

World 1: RP Server
World 2: /say RP Server
World 3: JP Onry Server
World 4: English Only Server
World 5: Kitty Server
World 6: Prissy Mage Server
World 7: White Knight Server
World 8: AFK Active Mode Server
World 9: Bot / Gilfarmer Server
World 10: EU Server