Unfortunately IAM Access Advisor only points to use of services (ex: S3-wide, EC2-wide), not use of IAM Actions. So it's useful, but it has serious limitations.

Unfortunately IAM Access Advisor only points to use of services (ex: S3-wide, EC2-wide), not use of IAM Actions. So it's useful, but it has serious limitations. I am hoping that they provide more granular results in the future.