Hello @Daniel_Taborsky!
These sections are a bit more specific to our workflow. We use the Status Update feature quite a bit so we designate a way to easily see which are still pending completion. I talk about this use case more in this post - 🔍 Track Status Update Requests using Advanced Search Reports
As for the other two, we have Projects in Asana designated to offer the ability to at-mention both Projects and Stakeholders (actual projects and stakeholders within these designated Projects are seen as tasks). More of this approach here: The Power 💪 of @mention & Advanced Reports combined