Google Search can show who wrote the review directly in the search results snippet. Google has this "reviewed by" rich result element next to some search results that names the author of the review.

Google recommends ratings include written reviews and author names. Reviews must be visible and provide context. Proper implementation improves search visibility and user trust. Google updates review ...

Google updated its review snippet docs to clarify how review targets should be specified You should avoid attaching the same review or rating to multiple different ...