In architectural patterns, e.g. MVP, MVVM, etc.
Let's take MVP.
to better convey the idea of MVP (and why it had limitations, leading to other patterns), "View" box should be show as multiple boxes. That is, there many views and one controller. (I think if two View boxes drawn, with one behind the other, it will avoid overcrowding of the diagram).
In architectural patterns, e.g. MVP, MVVM, etc. Let's take MVP.