Bitbucket server. Pull-requests.

I am software architect who reviews the API specifications from different project teams.

We use swagger files as API specifications. Every change to API specification requires Pull-Request with approvals from:
1) software architect

2) at least one lead developer from server side team

3) at least one lead developer from client side team

I work with a couple of teams and projects simultaneously.

I see 20-40 different pull requests at same time in the list.

I need the instrument to track the status of my reviews with the following statuses of each pull-request:
1) I need to review this but not seen it
2) I reviewed and approved this, PR allowed to merge but not merged, maybe waiting approvals from other reviewers or software release.

3) I reviewed this and I have the open questions ( unresolved comments in PR)
4) I reviewed this, my questions resolved, PR has updated and I need to review it again.

Because one PR may have 3-10 reviewers, there is non-trivial task to sort PR's by the states mentioned before.