In reading order
Roboute Guilliman: Lord of Ultramar
David Annandale
Leman Russ: The Great Wolf
Chris Wraight
Magnus the Red: Master of Prospero
Graham McNeill
Perturabo: The Hammer of Olympia
Guy Haley
Lorgar: Bearer of the Word
Gav Thorpe
Fulgrim: The Palatine Phoenix
Josh Reynolds
Ferrus Manus: The Gorgon of Medusa
David Guymer
Jaghatai Khan: Warhawk of Chogoris
Chris Wraight
Vulkan: Lord of Drakes
David Annandale
Corax: Lord of Shadows
Guy Haley
Angron: Slave of Nuceria
Ian St. Martin
Konrad Curze: The Night Haunter
Guy Haley
Lion El'Jonson: Lord of the First
David Guymer
Alpharius: Head of the Hydra
Mike Brooks
Mortarion: The Pale King
David Annandale
Rogal Dorn the Emperor's Crusader
Gav Thorpe
Sanguinius: The Great Angel
Chris Wraight
A Lesson in Darkness
Ian St. Martin
Morningstar
Graham McNeill
Illyrium
Darius Hinks
Blood of the Emperor
Nick Kyme, Graham McNeill, Chris Wraight, David Guymer, Andy Clark, Mike Brooks
Sons of the Emperor: An Anthology
Aaron Dembski-Bowden, Nick Kyme, Graham McNeill, John French, Dan Abnett, Gav Thorpe, Guy Haley, L J Goulding, Guy Hayley