Brand me please
For creative freedom you need a supervisor who empowers you but for your growth you need to market your achievements more strongly in different manners and on multiple occasions. Your supervisor could be weak because of his personality or lack of data points. You cannot control the personality but you can supply the data points.
You need to create a plan to generate data points and publish it either daily or weekly as your accomplishments.
Designations and their fallacy
Names like project manager and technical architect do not matter. You like to do something and sometimes that something is driven by technical pull or managerial pull say people/customer/technology management. Designations are to play with human need for putting a name that is associated with certain benefits like access to internet or that implies your number of years in job.
Ultimately you do what you like to do. If you love people then you would devote most time to people management, same is true for customer or technology management. Depending on how much you want to reach out you would be focused on team under you or peers around you or superiors over you. The same is true for customers internal to you or outside company or who are related and coexist in your customers ecosystem. And for technology that is needed for current project needs and can reach out to businesses supported with current project needs and then to domains that need to coexist.
The definition of what you do is extension of what you are and what you like to do. Titles only identify and distinguish but do not speak about inherent strengths of individuals. If we stop identifying ourselves with promotions and the next title then we would create a eco system where concept of promotions will die off. That could be the idea behind flat organization. You are known by what you have achieved, the output or deliverable or the product. You know Einstein by theory of relativity but does it matter if he was chief scientist or senior chief engineer etc., Titles go with you when you die but your achievements are remembered for generations.