My guess is that Oracle Linux will use OpenELA source code repositories to create a distribution that has the usual Oracle-specific quirks, whereas RockyLinux a

My guess is that Oracle Linux will use OpenELA source code repositories to create a distribution that has the usual Oracle-specific quirks, whereas RockyLinux and SUSE will use these repositories to create a distribution that has Red Hat-specific quirks. Sounds like members will have the freedom to do whatever they want with their distribution, they probably won't let any one member exclude specific packaging repositories that are desired by other members.