single issues, arcs, minis, maxis, and long form.
single issues/arcs already part of a listed arc/run cannot be included and vice versa (so Batman RIP and Batman Inc aren't separate, but rather parts of Batman run by Morrison). This may change, since I'm unsure how to rate Multiversity if Pax Americana is also in its own ranking, for example.
to-get list (completed...ongoing): Promethea, Y the Last Man, Days of Future Past, Gaiman's Vertigo run, Scalped, Hitman, The Invisibles, The Filth, Waid's DD, Grass Kings, various Mouse Guard books, Rosenberg's Punisher, Strange Adventures, The Last God, American Gods, Beta Ray Bill, Superman: Space Age, Aquaman Andromeda ... Taylor's Nightwing, GWW's Poison Ivy
owned backlog: League of Extraordinary Gentlemen, Locke & Key, Northlanders, BKV's Swamp Thing, Way's Ghost Rider, Aaron's Ghost Rider, Dept H, Revival, Letter 44, She Said Destroy, Papaya Salad, Female Furies, Material, The Surface, Wolf, Midnight Nation, The Shade, PAD's Supergirl, We Stand On Guard, Lemire's Animal Man, Sara, Heathen, Umbrella Academy v3, Snow Glass Apples, Blade Runner 2019, Blade Runner 2029, Butcher Baker, Killjoys: Nat'l Anthem, various Mouse Guard books, Eros/Psyche, Crema, Mink Woodcock: Tesla, Jimmy Olsen, Monsters, Demon Days, Rorschach, Batman's Grave, Gaiman's Norse Mythology
started completed works but need to finish: Chew, Irredeemable, Incorruptible, Lobdell's Gen X, X-Tinction Agenda, X-Cutioner's Song, X-Men: Supernovas, Deus Ex Machina, DD:Mw/oF, Preacher, Zero, Gotham Central, Rucka's WW (both runs), Mind MGMT, I Vampire, Aaron's X-run, Morrison's JLA, Postal, Toil & Trouble, Roche Limit, Manhattan Projects, Manifest Destiny
started current unfinished works but need to finish: Saga, Southern Bastards, Ether, Monstress, Ice Cream Man, Snotgirl, Zdarsky's DD, Blade Runner Origins, The Cimmerian, Home Sick Pilots, Money Shot
honorable mentions: anything Hellboy or BPRD, Sleepless, Maneaters, Remender's UXF, East of West, Age of Apocalypse, Gillen's X-Men, Age of X, Wanted, Morrison's WW E1 trilogy, Sin City: Hard Goodbye, Mouse Guard: Baldwin the Brave & Other Tales, Revolver, X-Men: Red, Mice Templar Legend 4.12, Paper Girls, Minky Woodcock: Houdini, Superman & The Authority, Punisher: On the Road, They Called Us Enemy, We'll Soon Be Home Again, Shade the Changing Woman, Flashpoint, Material, Blue in Green, Ice Cream Man #18-19, 24, Punisher by Becky Cloon #15 and others?, Drifter, Kot's Secret Avengers, Milk Wars, Batman by Tom King
As w/ all my lists, it's a mix of subjectivity and objectivity. The list isn't purely "favorite" nor purely "best", but considers both, as well as historical context consideration. Contemporariness may play a factor.