So far, no one has alluded on which type of Ethernet cable is better than others for high end audio.
Jussi Laako - the owner of Signalyst (HQPlayer - a product that I like) has done a lot of research on the pre-DAC part of the signal and signal transfer.
He recommends using CAT6 / 6A U/UTP (plastic connector ends. No shielded cables like STP or F/FTP).