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IIUC, this section currently only documents OSA/OSD adapters.
For RoCE Express adapters, we have Predictable Names with their own scheme. More info in IBM docs [1].

In short RoCE Express uses zPCI.
They can be given unique names through their FID or UID. Usage of UID is recommended by IBM.
These new Predictable Interface Name schemes are only available in the current 9.0 release, not any RHEL 8 release.

[1]https://www.ibm.com/docs/en/linux-on-systems?topic=identifiers-interface-names

Reported by: smitterl

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/configuring_and_managing_networking/consistent-network-interface-device-naming_configuring-and-managing-networking#annotations:d5a84e5d-0e4e-46f6-8ecc-1abdcee4dbc6

Section 1.4. Predictable network interface device names on the System z platform explained

Published release note: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html-single/9.0_release_notes/index#enhancement_networking

Relevant Jira ticket: https://issues.redhat.com/browse/RHELPLAN-123702