Interesting, thank you for the details. This means that in some way, RHEL is ahead of Oracle Linux in terms of kernels? I don't see an UEK version tracking Linux 6.1 at all, AFAIK.
It's true that Red Hat does pull in changes from upstream for several subsystems of Linux. It's genuinely a frankenkernel mixed with code from 6.3, 6.1, etc.
But you're still beholden to what the Red Hat maintainers are pulling in and focusing on. It's still not a general follow upstream wholesale.
You can see and track what UEK is doing by looking at their Github: https://github.com/oracle/linux-uek/commits/uek7/u1
See here for an article that describes how it's done --> https://news.ycombinator.com/item?id=36763935
Most of the RHEL kernel is a few months behind upstream despite the old version. The next minor release of RHEL, to be released in November, probably will have features up to 6.3 for many subsystems and bugfixes up to 6.5 for example.