Which ROS package dependencies are redundant/implicitly included?

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Hi all,

I am wondering the following: when adding a dependency to roscpp, what are the packages that are implicitly included ?

Here is a concrete example:

find_package(catkin REQUIRED COMPONENTS
  rosconsole
  roscpp
  )

In this case, would rosconsole be considered redundant? Is it included in roscpp? If yes, what are the packages that are implicitly included in roscpp?

In summary, how would one find which ROS packages are implicitly included for any package?

Thank you!