Project Management - External Stakeholders Listing and communication plan

Looking for a Best practice proposal for the Project Managers under the Project management License.

How to best document the internal and external stakeholders (without access to the platform):

  1. coordinates 
  2. associated communication links
  3. Stakeholders management plan.

The purpose it to create a common approach to document and retrieve the internal and external stakeholders of the project.

Is there an application that could support this effort (note I'm on Prem - 2023FD04) or should this be document based?

It would maybe be a good idea to foresee a functionality in Project Management application.

@CS @JC @AL