Roamers
Roamers wander beyond the shire territories, searching for resources or simply scouting so that the shires can learn more about the world they inhabit. They also go throughout the territory, replenishing the artisans' and physicians' supplies.
Roamers are some of the most knowledgeable cats when it comes to those living beyond shire territories. They are familiar with multiple cat dialects (some can even speak dog, fox, etc.) and generally have friends and connections beyond the shires. They use these connections to develop alliances or trade relationships with outsider groups. This is how the shires get their paws on cloth, a very valuable material for artisans and physicians (used for blankets, bandages, etc).
Roamers spend a large amount of their time traveling, often times being gone for weeks. Because of this, they tend not to take mates or to only mate within their rank. It is also not unheard of for roamers to take outsider mates (this is actually quite common, but it is an unspoken rule within the roamers to not bring this up as much back home, since it is sometimes received poorly by shire leadership). If an outsider or outsider kittens join a shire, it is very likely they are the mate and/or kits of a roamer.