Struggling to find skill properties in general too. StatusData>Status_CONSUME shows some of the things you are looking for, but there is absolutely no information there regarding damage, mostly descriptions and effects. So where is the rest of the information? Stats>Potions shows fortify and stuff, but again only magic armour amount and duration - there's no immunity cleanse listing.

Starting to think their hard-coded and not available, unless for some reason they're hidden in scripting?