If you were thinking about e.g. Dante for proprietary protocols, then of course there are non-proprietary protocols too, like e.g. AES67. Alternatively, if you prefer a protocol at a lower level / without IP, then AVB/TSN is another standardized protocol suite. However, AVB/TSN usually requires special hardware support in the network interface cards and switches to assist with QoS and to meet the timing guarantees.