In a pre-v5 settings, what is the official "level" of knowledge of Arcanum members about Vampires?
Do they know about clans? About sects? About traditions?
I found in Hunter: First Contact that they're aware about most Disciplines and that all vampires don't have access to all powers. They seem to be aware of ghouls and blood bond. But I haven't found any information about their knowledge of the vampiric society.