For graphics novels:
I canโt avoid bringing up Alan Mooreโs Watchmen. Probably the most influential graphic novel ever written, it is a masterpiece on every level. Even if youโre not into superhero comics (which this is kind of a deconstruction of) the story stands on its own.
The Sandman series by Neil Gaiman. Feel free to pirate these considering Gaiman has turned out to be a piece of human garbage. But you canโt deny the mastery of this series. Gothic, romantic fantasy with incredible depth, beauty and power.
Saga by Brian K. Vaughan is a popular space opera series by one of the best writers in comics. Just really charismatic and engaging, great art, great characters and a narrative that effortlessly carries you along for the ride.
Sweet Tooth by Jeff Lemire is a strange, unique post apocalypse story. Great writing and characters but very dark and the overarching plot is kind of weird (but not really the point of the story).