Hello Chris Roberson,
Thank you for posting on the Microsoft Community Forum.
After my checking, I can see SRP only under Computer Configuration, there is no SRP under User Configuration.
Software Restriction Policies | Microsoft Learn
Based on the description "However, when I login to a machine, and run RSoP, SRP is still being set under User Configuration with the Unrestricted security level set as default.", you can check the group policy via gpresult instead of RSOP. Export gpresult and check the SRP with the Unrestricted security level set as default under "Computer Details" or "User Details".
For checking Computer Configuration within gpresult, we can follow steps below.
Logon this machine using administrator account.
Open CMD (run as Administrator).
Type gpresult /h C:\gpo.html and click Enter.
Open gpo.html and check gpo setting under "Computer Details".
For checking User Configurations within gpresult, we can follow steps below.
Logon the machine using normal domain user account (that applies this gpo).
Create a folder named F1 in C drive.
Open CMD (do not run as Administrator).
Type gpresult /h C:\F1\gpo.html and click Enter.
Open gpo.html and check if there are these gpo settings under "User Details".
I hope the information above is helpful.
If you have any question or concern, please feel free to let us know.
Best Regards,
Daisy Zhou