A Series of ASoIaF "Careers" for the Sims 4

MAESTER

As the order of scholars, healers, messengers, and natural philosophers, maesters educate new students at the Citadel of in Oldtown, a city in the Reach. House Hightower was integral in the Citadel's foundation, and continues to patronize the order. The Citadel is also financed by the lords who pay for having a maester in their service, and from certain taxes that it collects at Oldtown. 

As advisers to the Westerosi nobility, the maesters have largely supplanted the Alchemists' Guild. They are sometimes called "the knights of the mind." Some may never become an official maester or even an acolyte!

KINGSGUARD

Also known poetically as the White Swords or white cloaks, they are the royal bodyguards of the Iron Throne. Alternatively, if there is a Queen (regnant), they'd be called "Queensguard".

The Kingsguard was founded during the reign of the first Targaryen king on the Iron Throne, Aegon the Conqueror. The first Kingsguard was created at the suggestion of Aegon's sister-wife, Queen Visenya Targaryen, after a Dornish assassination attempt on their lives in the streets of King's Landing in 10 AC. She deliberately modeled the Kingsguard vows of holding no lands or title on the ancient vows of the Night's Watch, and seven knights were chosen because the king ruled the Seven Kingdoms.

FAITH OF THE SEVEN

A) Of the Seven, or the "Godsworn"

The "godsworn" leaders and followers of the Faith institution are called "septas" or "septons" according to their gender - "septas for women and "septons" for men". When they take their vows, they set aside their surnames, even if they come from noble families. Septons often wear white robes, seven-stranded belts of different colors, and a crystal about their necks as they perform their duties, which include leading worship with incense, censers, and songs. Septas do not lead services, instead they perform many other rites and can even become something like governesses, teaching generations of noble girls as a maester might. Where there are villages are too small to support a septon, a septon from a neighboring village might visit twice a year. Other times, wandering septons, or septons who travel from village to village without a specific to serve, might visit these small villages. And these septons perform the necessary holy services, consecrate and lead marriage ceremonies, and absolve sins. Both men and women often live in monastic, sequestered, self sufficient complexes called either a "septry" (men and boys), or a "Motherhouse" (women and girls).

B) The Faith Militant

The military "arm" of the Faith sworn to serve the gods under the command of the High Septon himself and His Holiness' alone. There are two orders: the Poor Fellows and the Warrior's Sons. The two orders are also known as the "Swords" and the "Stars" for their respective symbols. This branch has been outlawed by the crown for a time, but there are always lingering resentments and an eagerness to show one's svalor for the gods....

CITY WATCH

Members are weaponed-trained defenders of cities under the authority of the highest authority of the city. For example, in King's Landing they are sworn only to the Iron Throne and the realm's ruler and presumably falls under the bailiwick of the master of laws.