I use an Amazon Special CAT6 (I believe the brand is either Cables 2 Go or Cables Matter) between my Vivaldi Upsampler and Ubiquiti switch.
I have a unique position in the industry as the “network streaming guy” for one of the premier digital audio manufacturers so I could easily have any audiophile cable currently available. I still chose the basic unshielded cable that passed certification.
Keywords above are unshielded and passed certification.