I've always enjoyed stuff from DC's Vertigo label printed from around the late 80s to early 00s. Whether they were interconnected series that technically took place in the wider DC verse but mostly kept to their own corner (Swamp Thing, Sandman, Animal Man, Shade The Changing Man) or wholly independent series in their own continuity free to do whatever they wanted (Preacher, Fables, The Invisibles, Transmetropolitan), they offered readers a chance to read stories with a more serious tone, but mostly without falling for the grimdark edge trap that mainstream comics at the time were falling for hard. "Deeper, not darker" I believe was the mantra.
I'm sure a lot of people will dislike me for the above opinion due to Vertigo's overt leftist progressive bend and the current state of cape comics which most likely is in some part due to early Vertigo inspiring current writers, but at least Vertigo comics still bothered with trying to tell good stories and making characters flawed rather than just diverse Mary Sues. And its desire to reflect the current times, with mention of contemporary social and political issues, means you essentially got a neat little pocket universe in a time capsule, which unlike the current Orange Man Bad comics at least are still interesting to look back on.