Take a look on this user. Ordinary user, no diamond no text in the About Me indicating he's employee or anything like that.
Now sift through his reviews.
The user has a binding vote when reviewing suggested edits... he's also not OP of any of those posts.
This is NOT case of clicking "Improve" as well, in such case the review action is "Edit" and it's rejected by our dear Community user, not the reviewer.
What's going on? I also checked the Team page and he's not there. (Checked the HTML source for the links, as his display name is not his real name)
Marking this as feature request in case this power was granted on purpose, then it's better to add some indication e.g. special symbol next to display name and something official here on Meta or in the blog.