canon rp – What is the difference between the autofocus (Eye AF) in the R/RP and R5/R6?

I myself own a Canon EOS R and cannot believe how much I needed eye AF until I tried it. After Canon has started shipping R5 and R6 I am wondering how the eye AF differs in these models compared to especially the R.

I have yet to find a review that goes into detail about this specifically.

I am hoping that someone in here can help?