I'll be sure to be on a look out for them. If any books pop up that fit your category, I'll be sure to send you a word :)
Before I scrolled through your list I was going to say that I don't normally read novellas. But then I realised I've read a lot of the books you plan to! I can't seem to think of any books right now but I'll send you a list if I think of any.
I would suggest Susan Kaye Quinn's Debt Collector series. It's futuristic science fiction, and the first three of nine episodes are now available.
I know I have some but I'm not thinking of them right now. There are some steampunk ones if you search steampunk. OH and E.J. Wesley has a series of shorts. Blood Fugue is the first. They are really good urban fantasy type reads. I loved them!