Looking for existing subscribers to cPanel Centos 7 AWS AMI

Folks, I am trying to find an AWS account that is currently subscribed to an obsolete AWS AMI for cPanel on Centos 7. I lost access to a backup snapshot when I unsubscribed and need to restore some files from the snapshot. Both AWS and cPanel high-level support can't help me. I can transfer to snapshot to another AWS account which will be able to recover the files if they are subscribed to the obsolete AMI. Thanks, Jim