I had the same problem: Kubuntu 22.04 with AMD CPU froze in the middle of reboot with new 5.15.0-53 kernel. While looking for answer, I saw your question.
I can't answer to Your questions, but I'd like you to know, that I found answer to my problem:
I had AMD GPU drivers installed from AMD webpage and after removing them ($ amdgpu-uninstall) the problem was solved.
Works now with secure boot both disabled/enabled in UEFI settings.
While installing kernel to and old Intel CPU computer with exactly the
same OS - no problems at all.
Hope this info helps you or someone else
EDIT!:
I probably can answer your question now: I think at the moment you have to make a choice between kernel and Nvidia driver (I wrote the same text as comment):
EITHER keep Nvidia driver and use previous kernel OR get rid of Nvidia driver and use new kernel.
(If you want to play with your computer, after uninstalling Nvidia 470 and rebooting to new kernel, you can re-install Nvidia and see what happens... but every Linux OS includes a GPU driver preinstalled... so you don't NEED to install a separate GPU driver - I probably will never do it again)
Instructions how to do this: