Turns out the Tiglon TPL-3000L White Tiger LAN cable won't be available until mid-May at the earliest. Due to heavy demand I guess. So I switched my order to the TPL-2000L Professional which was the former top model and will ship much sooner. I've read it has a very organic, analog sound to it, which is exactly what I am looking for.
It looks like the majority of Japanese cable brands focus on the interconnects, speaker cables, and maybe power cables. Not many offer digital and especially things like I2S over HDMI or Ethernet. So I'm glad I found at least one option to try out.

