Unfortunately after 3 hours of google and thread searching, there seems to be a disturbing lack of documentation I can find on damage types for dnd 5e that can be applied as an immunity, resistance or vulnerability.
I've found something like "RESIST: bludgeoning, piercing, slashing" works fine (when you remove quotes), but finding a complete list of accepted damage types has been a quest all its own... and the wiki about effects and applying them lacks anything appearing to be a complete list.
Could someone provide a list of known damage types OR point me in the direction of said list hiding somewhere please? I'd sincerely appreciate it!