David Simon's miniseries, Show Me a Hero, earned three nominations, including Best Movie Made for Television or Limited Series, as well as nods for actors Oscar Isaac and Winona Ryder.
Extended care comedy Getting On was also recognized, with supporting actor nominations for Niecy Nash and Mel Rodriguez.
Cinemax's The Knick earned nominations for actors Clive Owen and Andre Holland, and will compete against The Leftovers for Best Drama.
An acting nod for Rachel McAdams in True Detective, as well as recognition for both Last Week Tonight with John Oliver and Project Greenlight, were among the mentions.
The 2016 ceremonies will be hosted by Silicon Valley's T.J. Miller on January 17.