Hey everyone!
I just wanted to share an update on this post for anyone else in the future who may run in to this use case as well as to what the eventual solution was.
Although I was not able to locate the owner of the youtube account because the youtube account was either:
A) Created on a personal, gmail account (not an account in our workspace)
or
B) The workspace account has since been deleted and it is why it is not showing up.
The way we reached this conclusion is that the following command lists all of the existing active users + suspended (and in my case archived users) that have a youtube account associated with their google workspace account:
gam all users_ns_susp print youtubechannels allfields todrive
The "gam all users print youtubechannels allfields todrive" command I used earlier only shows the users that are active.
But with Ross's guidance, he shared that if you add "_ns_susp" to the end "users" portion of the command, it does a complete export of all the users.
As a result, I was able to attain a larger list of users with associated youtube accounts.
This was extremely helpful, especially because the information shows that there is a possibility that this youtube account I am searching ownership of is a non workspace account.
I hope this can help someone in the future.
Special shoutout to the legendary Ross Scroggs, thank you for all of your support, contributions and everything that you do for our amazing community.
Take care everyone and keep being awesome!!