@rey look into VFD cable! i don't know if it comes in small gauges but if it does it'd be a good way to avoid transmitting much (it's meant to solve this exact problem with large motor drives, which are extremely noisy because you don't filter any high-frequency stuff out, it's way easier to just use the motor windings as a filter and the motor doesn't care)
-F
@rey it'd be really overkill but twinax cable would work too, as long as you only need two conductors
-F
@rey oh you could probably also use ordinary STP cable like good quality cat6 or cat5e cable, and Lapp's Ölflex cable has some good shielded options
-F