I think of Men at Work..a crowning achievement.

An ode to wormy villainous white guy character
actors from the 80's/90's: Xander Berkeley, William Atherton, John Getz, JT Walsh, Jeffrey Jones..they just dont make em like they used to.

As mention before, since this list is so heavy on white peeps, i would suggest: Octavia Spencer,
Lennie James, Reg. E Cathey, Steven Park, and Clifton Collins Jr.

Fun topic. Amy Ryan was a great character actor for awhile before moving up the ranks.

I would also like to submit:
Elizabeth Marvel, James Badge Dale, Stephen Root ( always and forever), and pretty much the whole supporting cast of The Grey. Richard Jenkins as well..one of the best.