Diverse Blood

Mostly healthy mammals, reptiles, fish and anything else not listed below

Bonelords, Liches, Skeletons, Storm Atronachs

Gold Sparks

Centurions, Flame Atronachs, Ash Vampires, Imperfect, Dagoth Ur

Blue Energy

Ancestral Ghosts, Dwarven Spectres, Frost Atronachs, All Summons

Crabs, Dreughs, Grahls, Netches, Scribs, Winged Twilights, Karstaag, Rieklings (Non-Mounted)

Green Blood

Ascended Sleepers, Goblins, Golden Saints, Hungers, Kwama, Nix-Hounds, Udefrykte, Blighted Alits & Shalks

 Dark Blood

Bonewalkers, Corprus, Draugr, Ogrim, Vampires, Yagrum Bagarn, Most Ash & Blight Creatures

Orange Blood

Dremora, Shalks, Spriggans, Hulking & Verminous Fabricants

Rationale

Dremora

I like the idea that they bleed glowing orange blood, like a demonic version of Predator with a volcano-like visage -- an ashy black surface containing fluid that resembles the fiery oceans of Oblivion's Deadlands (which could very well be an ocean of Dremora blood).

Fabricants

If there was an extra texture slot, I would have given them white blood inspired by the androids in Alien, but orange was the next best choice (since not much else uses it). Possibly harvested from Dremora?

Goblins

Green blood to match their skin color, assuming said pigment is caused by high levels of biliverdin. Plus green blood is a fitting trope for goblins.

Hungers

I see them as demonic humanoid leeches, and leeches bleed green.

Kwama Foragers

Green-blooded like the Earth annelids they resemble.

Kwama Workers, Warriors, Queen

Starting life as blue-blooded crustaceans, assimilation with the Forager annelid results in the adult Kwama's blood being gradually replaced with that of the Forager, both to prevent rejection and allow the annelid to function as the host's sole method of eating, digestion and reproduction. Even Kwama Workers bear this symbiote, not yet being large enough to emerge from the Kwama's former GI tract.

Ogrim

I mostly just wanted at least one black-blooded Daedra for the sake of variet