ssh agent does not list my keys despite $SSH_AUTH_SOCK set

I've seen previous discussions on this topic, https://1password.community/discussion/139077/ssh-agent-wont-list-my-keys, however my current configuration has all the bits in that discussion.

So, here's my current setup and configurations:

1. I have the 1password ssh agent running per the Settings -> Developer options in 1Password.
2. The configuration (~/.ssh/config) has a Host * IdentityAgent pointing to "~/Library/Group Containers/2BUA8C4S2C.com.1password/t/agent.sock", which I added automatically from the settings page
3. I added the global plist per https://developer.1password.com/docs/ssh/agent/compatibility/#configure-ssh_auth_sock-globally-for-every-client and loaded it. It did not complain about errors, so I assume it's working
4. I restarted the computer since then
5. I made sure my zshrc does not redeclare the SSH_AUTH_SOCKET environment variable
6. fetching private repositores from the command line works, as 1password pops up and asks me to authorize the keys in the vault, and then succeeds in using them
7. there are no keys as files in the ~/.ssh/ directory
8. I have an ssh agent configuration toml file which changes the order of the keys, but nothing else
9. $ echo $SSH_AUTH_SOCK tells me it's set to /private/tmp/com.apple.launchd.IC5jFZHBxD/Listeners (unsure whether this is due to the plist file?)
10. ps aux | grep ssh-agent tells me there's an ssh-agent process running at /usr/bin/ssh-agent -l, I don't think this is 1passwords, and I don't know what starts this one

With the above, ssh-add -l tells me the agent has no identities. Ideally I would like the command to list the keys that the 1password ssh agent has

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1Password Version: 8.10.18
Extension Version: 2.16.0
OS Version: macOS 14.1
Browser: Arc (chrome)