Originally Posted by A_Perfect_Sonnet

I'll give 3 to 5 selections from the main 3 you wanted.

Screamo:

Bright Calm Blue
Circle Takes the Square (or Devar-Toi who have a very similar sound)
Versoma
With Horses In Her Eyes (aka Histories)
Love Like... Electrocution

Emo:

Cap'n Jazz
State Route 522
Daniel Striped Tiger

Post-Hardcore:

Circa Survive
Evaline
Trophy Scars
Minus the Bear