Any lists of types of items dropped by various mobs?

I am trying to find some good mobs to go kill to try and get some runes. What are good monster types?

I thought it was basically anything you would think of as wearing armor, like giants and charr and grawls and those bird-men (tengu?) and what not.

But I also hear people saying they get runes from minotaurs and sand drakes. Is this true? Can you get rune drops from these types of mobs?