You can develop your list of contacts further by expanding it into a RACI matrix. If you aren’t familiar with this tool, it documents the roles and responsibilities for everyone involved in your project. It works by creating a matrix of each team member and stakeholder on one axis, and all the key activities and responsibilities on another. For each responsibility, you map out which stakeholders are Accountable for the success of the activity, Responsible for hands-on performance, Consulted about how the work should be done or Informed about progress.
This can be very useful to keep on hand when there are a lot of stakeholders and team members and where the PM may need to actively keep resources aligned to their responsibilities. It’s nice to be able to say: “Actually, that is/is not your responsibility. Here, let me pull up our agreed RACI matrix for that job…”
You can list roles, responsibilities and even who should receive different communications like status reports in the RACI matrix.