Stakeholders can be categorized within groups. You must think of the most relevant way to group them in order to streamline the message you’ll be communicating with each group. Try to define broader groups, which will include similar stakeholders.
Here are a few examples:
|Governmental authorities||Project-affected communities||Businesses and commercial organizations|
These are just some ideas to guide you, you should define groups that are relevant to your project, given your context, history, location, scope, etc.