Hello, Richard, and thank you for your response.
I apologize for not being clear, I unintentionally left out in the original post that everything sounds fine from the mixer’s phones. When the feed gets to the camera, however, is where what I called “noise” but more specifically is interference begins.
I mentioned that the mixer seems more for music and PA work because the XLR main outs are for “powered or amplified speakers” which may be part of the problem.
The camera is on battery power so I was thinking of plugging it into another outlet that the mixer is not drawing power from.