Some good picks in there. I haven't seen all but most of them. Had some of them on my to watch list but been putting them off. Will get around to them now you recommended them alongside the others.
Have you seen -
Magnolia (one of my all time faves)
The Killing of a sacred deer has two more films in the same 'universe' apparently. I forget the name of one of them but the first one is The Lobster. Well worth a watch. Also stars Colin Farrell.
Paddleton - is a good movie with a suicide theme
Creep - is a pretty unnerving guilty pleasure of a watch.
Reign over me - Adam Sandler in a decent serious role.
Punch Drunk Love - This is an absolute classic. Must see!
I'll have to come back to this after checking my film catalogue. I too have had a love affair with the dark tales. Also quite fond of post apocalyptic stuff but it's spattered with a lot of crap. When they get it right though I really enjoyed/enjoy it.
In the meantime I'll get around to Biutiful & Matyrs
Thanks.