Another book I refer to far too often (that's in addition to Chambers Dictionary, the Oxford Book of Quotations, and of course the Voynich Manuscript), is Chambers Crossword Lists. This lists (spoiler in the title), words and phrases under all sorts of categories. It's meant, and usually used around here, for cheating at crosswords; but sometimes it can be fun just to let it fall open at random.
So it was that, vaguely seeking different types of Hats, I've just discovered that the following kinds of Humour exist:
dry, sick, black, gallows, surreal, farcical, satirical, slapstick, lavatorial, barrack-room, Pythonesque.
Is this an exhaustive list? Is it relevant, important, or interesting? Is it even funny? You be the judge.
I could move on to the next entry, Hydrocarbons, but you've probably had enough for now.