I love the Dark Horse comics they were doing just before Disney took over. My favorites were the stuff that had nothing to do with the main crew for the most part.
Star Wars: Purge - Set right after Epidsode 3 and show Darth Vader in his first outing hunting down surviving Jedi.
Star Wars Omnibus: Dark Times Vol 1-2 - Collects the books after Episode 3 and tells the tale of a jedi named Dass Jennir who survived Order 66 and what he had to do to survive in the now Empire controlled galaxy.
Star Wars Omnibus: Knights of the Old Republic Vol 1-3 - The story of a young padawan named Zayne Carrick framed for the murder of his classmates and forced to go on the run and solve the mystery of why he was framed and clear his name.