Andrew Abbott introduces a typology of methods in his 2004 book Methods of Discovery: Heuristics for the Social Sciences.
The Slow Cognition Project and related methods
I use Slow Cognition to describe my favorite methods such as Howard E. Gruber’s evolving systems approach to creative work.
Method 101: Diagramming as Theorizing
Engeström considered the use of graphic models as an important part of his method of theory building. He sees graphic models as both representations and instruments which invite readers to build their own version of the diagram.