Interesting analysis of the leagues creating capabilities, and the effects of some ingredients...
If you want to make people more heroic fill an item full of green iron
Dragon bone is used to bond things together. People, coven's, Etc
Iridescent gloaming us used for magic and banners, that one is a big vague I'll admit but I don't think I have a big enough sample of those.
I find almost no statistical significance in ambergelt, beggars lye or welt silver. And for orichalcum, only the vague weapons and armour, nothing significant in the effects yet.
This is just the start of a long project, I'll keep you informed of further progress.
My list updated. This is the whole of the League that i have notes on, there are places I haven't spoken to yet I'm sure, and almost certainly places I've been and lost my notes on as this still looks short of a few names. docs.google.com/spreadsheet/ccc