Those are stories with great bedrock themes that transition across most genres, specifically the first two and last two. If anyone is ever interested these are some steampunk books I have on my shelf that tend to be a bit darker, though you are right LJ, the genre as a whole has a lighter more imaginative flair but there is some twisted and devilishly dark/creepy stuff out there.

Homunculus by James P. Blaylock 
Heart of Veridon by Tim Akers
The Giving Mouth by Ian R. MacLeod
The God-Clown is Near by Jay Lake
The Steam Man of the Prairie and the Dark Rider Get Down: A Dime Novel by Joe R. Lansdale

It is interesting how we have all been presented the same body of info and background and how we all see it through differing lenses.