In need of a non-bias third party to prepare document

In need of a non-bias third party to prepare document, This is an odd one but a group of 25-30 people in my Industry are looking to remove a prominent figure from our industry counsel boards due to a reveal of highly toxic, bullying and abusive behaviour.

No idea how to cost this.

While the company is enduring its own investigation, I am trying to prepare a document with statements from others with the hope that identifiable information can be redacted by a non-bias third party so that I may provide a report for the boards of counsel.

Naturally, I've never done anything like this before but it felt like the strongest way forward while securing more numbers for the justice needed.