Cool idea!
Okay, I'll just go over some of my favorite artists whose art I really enjoy seeing in my feed.
Goldie Silverman: Mostly pencil drawings. A very inspired and inspiring artist, I'm in love with the posing, detail, anatomy and expressions they employ in their comics and concepts. Very creative, and often pretty funny.

Roanimations: A toony and very dynamic style. His stuff really shines with his rendering/blending technique, sometimes with unique and interesting color choices. All around fun.
SanstrongStyles: This guy tackles many styles in his pieces, and they all go hard! My personal favorites are the more fluid ones as opposed to the grittier portraits, but they're all great. Maybe you'll have a favorite style too.

KornArt: A front-page regular, and for good reason. This guy just makes some of the most gorgeous fanart, and at a pretty frequent pace too.

MateusBoga: I love this artist's style, especially some of his "chunky" linework. I personally dig some the character designs and atmosphere of some of his pieces.

Rotze: A very appealing art style. Anime-inspired with thick, varying linework and cel-shaded vibrant colors culminates into sharp and striking pieces that demand your attention.

That was a lot, but I have even more on my favorites page. There's just too much awesome content!