Now we have time slicing for high reliability Ethernet (IEEE 802.1Qbv). I have never worked with it and don't properly understand it, but I think that instead of passing a token around, there are time windows for high priority devices to transmit.
Low priority devices must stop transmitting in the window, and switches will interrupt any transmissions not allowed.
Low priority devices must stop transmitting in the window, and switches will interrupt any transmissions not allowed.