What happens when the person who created a cluster is no longer with the company? I do not want to see their email ID in the cluster event logs.

[MoJaMa]

Currently there is no concept of "Cluster Owner".

https://docs.databricks.com/security/access-control/cluster-acl.html#cluster-level-permissions

So you have to clone the cluster, thus making the person who cloned it the creator of the new cluster. Then delete the old cluster.