Hmmmm, let's see...
For electronic music I'll go with
Nicolas Jaar Essential Mix
For rap I'll go with Death Grips' NO LOVE DEEP WEB, and Joey Bada$$'s 1999
For drum and bass duo I'll go with Ninja Academy's Self Titled, because Om really let me down with Advaitic Songs
Cloud Nothings' Attack on Memory
Black Sheep Wall's No Matter Where It Ends
Demonic Death Judge's Skygods
Diesel King's The Ancient and the Nameless
Dopethrone's III
Eagle Twin's The Feather Tipped the Serpent's Scales
Ides of Gemini's Constantinople
Whales and Aurora's The Shipwreck
Giza's Future Ruins
Ishmael's Hell Is Empty And All The Devils Are Here
Apocalipsis' Self Titled
Oak's Silent Spring
Exotic Animal Petting Zoo's Tree of Tongues was a nice release, but seeing as this is a list of what I liked most, not what's best, it's not making the first list. It deserves a mention, though.
Down's IV was disappointing and I am only including it on this list to express it's inadequacy.
Well there's my top 16 albums of 2012.