Novels/non fiction/ poetry collections about grief and death

I’ve been struggling with the sudden loss of a very close long term friend. Please suggest books about death and/or grief.
I’ve read:
– The Year of Magical Thinking by Joan Didion
– all of Caitlin Doughty’s books
– The Dark Interval by Rainer Maria Rilke
– Stiff by Mary Roach
– How We Die by Sherwin B Nuland
– Being Mortal by Atul Gawande
– When Breath Becomes Air by Paul Kalanithi
– All That Remains by Sue Black
– The Bell Jar by Sylvia Plath

Currently reading The Death of Ivan Ilyich