I was gonna say I bet Janet regrets not making that list now ;)

Here's a thought: If we want a way to include more people what if we also apply a very broad definition of "Slayer"? That way anyone who's fought a vamp, a zombie, or a snow monster could also donate if they wanted to.

Obviously they don't count as Slayers as much as an actual vampire Slayer does, but that'd be the point of including the alchemy, the UK MacGuffin, and the spell.