Well, on deviantart, my favorites would be~... , , and . Anywhere besides deviantart, I'd say probably, Motomi Kyousuke (she does the art for a manga called Dengeki Daisy. Whichisanawesomemangabytheway, youshouldreadit -- WHAT? I didn't say anything...), and Mark Crilley (yes, again. he's a youtuber who does tutorial videos and that's where I started out with my drawings).
YOU!!!! And...Yuumei, namie,nuriko... like loads....but also there are so many not as popular artists that are also really good and i wish they got more attention becuase i kinda stumbled upon them accidently...
I can't say I love a certain artist. Here on DA I really dig all of the people I follow...but I kinda follow alot. The one that sticks out most in my mind from DA is LeannLaughLove - [link] She is a great photographer
In the broader spectrum I just dig whatever. Mostly abstract, street art, and expressionism. Photography as well. I just love it all. AND NO ART IS BAD! ALL ART IS ART