The Thinking Hats method, developed by Edward de Bono, includes the following hats:
- The White Hat – focuses on data and information, looking at facts.
- The Red Hat – represents emotions and feelings.
- The Black Hat – is for caution and critical thinking.
- The Yellow Hat – is for optimism and benefits.
- The Green Hat – focuses on creativity and new ideas.
- The Blue Hat – manages the thinking process and looks at the big picture.
From your list, the Blue Hat is indeed a Thinking Hat, representing the big picture and the overall management of the thinking process.