Wifi streaming uses efficient compression to shove video and audio over ethernet, and easily achieve 4k @60hz, at the cost of lower bitrates. But For 4k @60 you need atleast hdmi 2.0, which is common in any gpu made in the pass 10 years.

If op is fine with 1080p @ 60, then hdmi 1.4 is enough. Also, they make hdmi over optical, so would you chose using cat cable?

Hdmi is not like cat 6. Hdmi 2.2 has bandwidth of like 96Gb/s. Youre not going to be transmistting raw video and audio over cat cable. (You might get hdmi 1.4 over it)