I couldn't find it on the wiki, but here's the list from the graphics example thing:
MINER
WOODWORKER
CARPENTER
BOWYER
WOODCUTTER
STONEWORKER
ENGRAVER
MASON
RANGER
ANIMAL_CARETAKER
ANIMAL_TRAINER
HUNTER
TRAPPER
ANIMAL_DISSECTOR
METALSMITH
FURNACE_OPERATOR
WEAPONSMITH
ARMORER
BLACKSMITH
METALCRAFTER
JEWELER
GEM_CUTTER
GEM_SETTER
CRAFTSMAN
WOODCRAFTER
STONECRAFTER
LEATHERWORKER
BONE_CARVER
WEAVER
CLOTHIER
GLASSMAKER
STRAND_EXTRACTOR
KING
KING_CONSORT
FISHERY_WORKER
FISHERMAN
FISH_DISSECTOR
FISH_CLEANER
FARMER
CHEESE_MAKER
MILKER
COOK
THRESHER
MILLER
BUTCHER
TANNER
DYER
PLANTER
HERBALIST
BREWER
SOAP_MAKER
POTASH_MAKER
LYE_MAKER
WOOD_BURNER
ENGINEER
MECHANIC
SIEGE_ENGINEER
SIEGE_OPERATOR
PUMP_OPERATOR
CLERK
ARCHITECT
ADMINISTRATOR
TRADER
TAXCOLLECTOR
EXECUTIONER
BARON
COUNT
DUKE
BARON_CONSORT
COUNT_CONSORT
DUKE_CONSORT
PHILOSOPHER
ADVISOR
ALCHEMIST
DUNGEONMASTER
MERCHANT
DIPLOMAT
GUILDREP
MERCHANTBARON
MERCHANTPRINCE
OUTPOSTLIAISON
DRUID
CHAMPION
HAMMERMAN
MASTER_HAMMERMAN
SPEARMAN
MASTER_SPEARMAN
CROSSBOWMAN
MASTER_CROSSBOWMAN
WRESTLER
MASTER_WRESTLER
AXEMAN
MASTER_AXEMAN
SWORDSMAN
MASTER_SWORDSMAN
MACEMAN
MASTER_MACEMAN
PIKEMAN
MASTER_PIKEMAN
BOWMAN
MASTER_BOWMAN
BLOWGUNMAN
MASTER_BLOWGUNMAN
RECRUIT
TRAINED_HUNTER
TRAINED_WAR
MASTER_THIEF
THIEF
STANDARD
CHILD
BABY
DRUNK
LASHER
MASTER_LASHER
These ones were also in there, but grouped differently, so I'm not so sure about them, but they probably work too.
MAYOR
LEADER
CAPTAIN_OF_THE_GUARD
SHERIFF
MANAGER
BOOKKEEPER
BROKER
HIGH_PRIEST
PRIEST
SHOPKEEPER
So it seems that you could potentially have a cheese maker for a ruler.