That depends on the designer. Depends on your definition of servant
and leader too :-)
Personally I'm not particularly comfortable with either label. I don't
like cutting up the world that way.
Servant Leadership maybe (http://is.gd/2aPnM).
I like to think of my self as a member of a team - working together to
build neat stuff. I'm not just telling people what to do. I'm not just
doing what people tell me.
We're working together. (On a good day :-)
Harold Nelson, co-author of a rich if left-field
book about design that would be relevant to your
question about designer value systems -
The Design Way ( http://www.advanceddesign.org/book.html )
- has also written a quite nice piece about