Voices of characters I hear when I read comics:

A thread:

Spider-Man: Yuri Lowenthal/Josh Keaton (depends on whether it's teenage Spidey or Adult Spidey)

Roger Craig Smith - Captain America (Steve Rogers) and Batman (Bruce Wayne)

Adrian Pasdar - Iron Man (mainly because he doesn't sound like a knockoff RDJ)

Travis Willingham - Thor.

The first Thor voice I grew up with (because of Thor TDW mobile game and the Disney animated shows)

Laura Bailey - Black Widow (Natasha Romanoff)

Cherami Leigh - Barbara Gordon/Batgirl and Mary Jane Watson

Even though she hasn't voiced either character before, she's the voice I hear when reading their dialogue.

Vic Stone/Cyborg - Ray Fisher

For obvious reasons

Todd Haberkorn - Bruce Banner
Fred Tatasciore - Hulk

Optimus Prime - Peter Cullen

Hugo Weaving - Megatron

Red Skull - Ross Marquand and Liam O'Brien

Sonic - Jason Griffith

Batwoman/Kate Kane - Amber Lee Connors

I've never had a definitive voice for Kate but Amber sounds the closest to how I always imagined Kate Kane to sound like.

John DiMaggio - Aleksei Sytsevich/The Rhino

He's voiced the character twice before and has always stuck with me as the definitive voice for the character

Maurice Lamarche - Mr Freeze and Dr Doom

Steve Blum - Wolverine and Starscream

Henry Cavill and George Newbern - Superman/Kal-El/Clark Kent (depending on which alternate universe version of the character)

End of thread.

For now anyways.