Memory, Sorrow and Thorn Series (The Dragonbone Chair, Stone of Farewell, To Green Angel Tower) A kitchen boy and a princess fight to keep the lands of Osten Ard from being overrun by evil. Each book is a great adventure, filled with amazing characters.
The Heart of What Was Lost Taking place after the events of Memory Sorrow and Thorn, it's a last stand for an implaccable enemy. It made a terrible people understandable, though never admirable.
The Witchwood Crown (Last King Of Osten Ard) The start of a brand new trilogy set in Osten Ard, it takes place 30 years after the first series. A new young man sets off reluctantly to learn how to be king someday, while the kingdom seems to be crumbling at the edges.
Gemma Doyle Series (A Great and Terrible Beauty, Rebel Angels, The Sweet Far Thing) A young woman in the late 1800's India has to attend a boarding school in England when her mother dies. There's a history at the school of a dark series of events involving her mother that Gemma feels compelled to investigate.
The Diviners (The Diviners, Lair of Dreams, Before the Devil Breaks You) Diviners are mostly teens with abilities like dreamwalking, mind reading, healing, and the art of not being seen in 1920's New York City. The time period and the styles, music, theater and radio of the day are richly conveyed, while truly ghastly creatures roam even in the daylight hours.
James S. A. Corey
The Expanse Series by James S.A. Corey (Daniel Abraham and Ty Franck) (Leviathan Wakes, Caliban’s War, Abbadon’s Gate, Cibola Burn, Nemesis Games, Babylon's’ Ashes, Persepolis Rising)
In the future, the solar system is fully inhabited, with populations on Earth, Mars, the outer planets and "The Belt." Some live well while others barely have air and water. Add to this an alien intelligent "virus" being nurtured as a weapon.
The Bone Season Series (The Bone Season, The Mime Order, The Song Rising)
Paige Mahoney works in a future London underground of clairvoyants of varying abilities who are hunted and harvested.
Queen of the Tearling (Queen of the Tearling, Invasion of the Tearling, The Fate of the Tearling)
Kelsea lives and trains in a hidden forest to become Queen of a fierce and brutal society.