Start with high-confidence poetry about death books, then narrow by subgenre or adjacent topics.
Come on In!
Charles Bukowski
The People Look Like Flowers at Last
The Pleasures of the Damned
The Continual Condition
Burning in Water, Drowning in Flame
The Last Night of the Earth Poems
Love Her Wild
Atticus
Bone Palace Ballet
What Matters Most Is How Well You Walk Through the Fire
Open All Night
A Brief History of the Midwest
Andrew Grace
Violet Bent Backwards Over the Grass
Lana Del Rey