Separated concerns is a category resorting under DynamicContent.
In contrast to the mostly unstructured approaches classified as MixedConcerns, attempts have been made to provide for a more structured way to specify presentation and other code separately. These are classed as DynamicContent approaches with SeparatedConcerns.
Typically, other code (in the foregoing paragraph) is either vaguely defined by these approaches as being code that has to do with logic, with business logic, or the model or controller in MVC.
This category in our the taxonomy represents such attempts---those that still focus primarily on the problem of generating a response to a single request, while keeping concerns separated.
It it further broken down into: