The Canon R5 e R6 establish new standards about possibility of autofocus and tracking., Which secret of firmware and processing they have, I don't know, but the result is very impressive vs the competition. And is more appreciable, because R5 and R6 are FF, and not aps-c.
I think (and hope) fuji will be able to give a right answer with the new products , and I hope that it will be able to upgrade firmware of other cameras to reduce the big difference, that now are really present.