>>7987135My recommendations. Most prequel related.
Vader 2015, story of Vader earning his position in the empire post death star blowing up in ANH
Vader 2017, set immediately after RotS. Inquisitors, hunting jedi, force stuff. Personal favourite.
Vader - Dark Visions, a small set of stand alones that sort of explore the different effect Vader has on people. Pretty fun.
Kanan, if you like the character in Rebels, this comic run tells his story after order 66
Darth Maul, short run of Maul pre-TPM hunting his first(?) Jedi. PRetty enjoyable
Obi-Wan and Anakin, short run set maybe half way between TPM and AoTC. A good look at Anakin's early training and his relationship with Obi-Wan/Sheev
Lando, short run of a heist Lando performed pre-ESB. Read this before Vader 2017 as they link together a little.
Shattered Empire, short run set shortly after RotJ. A good glimpse at the OT heroes in their prime.
Age of Republic, series of one shots concerning prequel characters. I enjoyed most of them.
Rise of Kylo Ren, pretty much required reading for Kylo's backstory but currently still coming out.
Also Doctor Aphra and the main Star Wars run are worth mentioning as they have their moments and link well with each other and the Vader 2015 run.