when I place one hand on the top of the metallic tonearm base (above the magnet which holds the tonearm in place) and the other on the metallic volume knob on the Rogue, the noise significantly decreases by >50%.
Switched the Rogue with my old Pioneer A-400 but the same issue persists
Phono stages can be finicky but when you have the same noise with two different amps that's a pretty good clue its the turntable. Unfortunately what looks good and works fine with line level isn't necessarily good enough for phono and the culprit can be elusive. Basically you are hoping to find Kizer Soze by eliminating the usual suspects.
1. Dirty connections. Thoroughly clean RCAs both male and female.
2. Ditto cartridge pins.
3. Ditto ground spade and binding post.
4. Internal connections. Running out of things to check one time I decided to change RCAs and when I unsoldered one lead the other one came apart. Bad solder connection. Unlikely but it can happen.
5. Shielding. Keith Herron suggested this test- cut some strips of aluminum foil and wrap them around the phono leads. If you try this be sure to cover all the way to the very end of the cable.
6. RFI sources. Ultimately if the connections and shielding are good this shouldn't be a factor but if you flip the breakers off all the circuits and the noise goes away then at least you can flip them on one at a time and narrow it down.
Hopefully you don't make it far down the list.