Here is a Canon EOS R6 Mark II review by a professional and reliable reviewer.…
Eye Autofocus Test: Canon EOS R vs Fuji X-T3 vs Nikon Z 6 vs Sony a9, a7 III and a6400
Hidema Nakajima posted a 20 minutes video where he compares the eye autofocus performance of the Canon EOS R, Fujifilm X-T3, Nikon Z 6, and the Sony a9, a7 III and a6400.