Answer:
thrillers: Save Me, Vagabond
medical dramas: hospital playlist, doctor stranger, hospital ship
office dramas: What's wrong with secretary kim, my secret romance
sad dramas: uncontrollably fond, scarlet heart ryeo
action: healer, the K2
historical dramas: tale of nokdu, mr. queen, hwarang
crime & mystery: flower of evil, train, the village achiara's secret, search
fantasy: tale of the nine tailed, goblin, W, Angels last mission: love
comedy: Potato star, Welcome to Waikiki
horror: kill for love, lovely horribly, sweet home