License hierarchy - does Architect include Connect Designer?

I am working to simplify my User Groups set-up; by separating the License privileges into one group per license type; and keeping the access privileges in separate groups.  This should make it easier to see where all the licenses are being consumed.

I would also like to reduce redundant license assignments, but I am not sure how the licenses relate to each other.

Does a 'bigger" license include the "smaller" or "lower level" license?

For example, if I assign an Architect license to a user; do they also need to be assigned a Connect Designer license, to use Connect Designer?

Similarly, if a user has a Connect Designer license; do they also need a Viewer Pro license to contribute?

Is there a reference for this somewhere?

thanks in advance,

John