Oooh, I found this! It's Caitlin Doughty's channel.
I read her book a while back, Smoke Gets in your Eyes, and highly recommend it.
She covers everything about death, from strange disasters and tragedies, through to iconic corpses such as sleeping beauty, the Romanovs and Jesse James, weird stuff such as suicide shaming and coffin births, and all things to do with facing your own mortality, such as ask a mortician.
There's loads more resources on her website, The Order of the Good Death.