Hi,
I don’t think something like this is possible as notifications are mainly routed by notification policies (Grafana 8+ up to 10.3 it was the only way). What you could do is to go to notification policies page, there you can search by contact point. There should be some labels that match the policy and then search alerts by those labels (which should be doable with label: key=value syntax).
Edit: If you have access to the database, you can also find which user created (or at least last modified) the alert, so it might be a point to the person.