Graphql API entity for review approved

I’m trying to build something around PR review status and want to work my way through all the reviews a particular author has made on one PR.

In this specific instance I reviewed a PR and left it in the COMMENTED status with some notes. As far as I understand this is a PullRequestReview object. Which I’m able to get from the API. Can’t post 2 images as a new user but this is the intermediate review with text.

At the end of the PR after the required changes I then approved without comment and this does not appear in the list PullRequestReviews for the PR. I also had a look through the Timeline objects in the API but can’t find one that would seem to match.

Am I missing something? What should I be looking for here?