Joe,
This could be a user rights assignment issue.
From this Microsoft Learn webpage: ___________________________________________________________________________________________
This security ID may not be assigned as the owner of this object.
Explanation:
The owner of a new object must be one of the users or groups you have been given the right to assign as the owner. Typically, this is your user account and, if you are an administrator, the administrator's local group.
User Action:
Learn which users and groups you have the right to assign as owner. Then try again.
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And the most important thing I found from your setup log:
2023-02-15 13:16:31, Info MOUPG Target OS: Detected Source DomainName = [DPBROWN]
2023-02-15 13:16:31, Info MOUPG Target OS: Detected Source DomainJoined = [Yes]
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That confirms that this is a user rights assignment issue.
Since your PC is connected to a domain, the Active Directory governs the user rights and security policies.
Create a local admin account
The best option I can think of is to create a local user account and run setup from there. And yes, clean-booting is always recommended, regardless.
Let's know how it goes.