The notion of soft skills is believed to have appeared in US army documents in the 60's.
Concomitantly, research on leadership were conducted in american universities.
These research have given birth to several theories [a], which, in their turn, have given birth to methods that have been the initial immaterial assets to create training/editing companies.
Such leadership theories are the Styles theory, the Situational theory and the Transformational theory.
For theses theories, a key element might be pointed out : it is a typology of leadership styles which is conveyed through a genuine wording pattern.
Below is a gamified introduction towards these patterns / companies. You are welcome to answer to the question by clicking on buttons.
For Pattern (i), who is the author/exploiting company :
- Robert House
- The Ken Blanchard Companies 
- Geier Learning International 
- The Center for Leadership Studies 
Pattern 1 : "Directive, Interactive, Supportive, Corrective"
Pattern 2 : "Delegating, Participating, Selling, Telling"
Pattern 3 : "Delegating, Supporting, Coaching, Directing" :
Pattern 4 : "Directive, Participative, Supportive, Achievement oriented"
[a] 10 leadership theories : a genuine table with emblematic authors, X-Soft-Skills
 Management stratégique du copyright : le cas "Leadership situationnel", X-Propriété-Intellectuelle (post in French)
About the technology of this post
 The technology use for the gamification of the post is an HTML5 piece of code released in 2014 under open source by Tru Do-Khac (X 79, author and producer of this gamified post).
The code was added to Blogger of Google to build the Personal MOOC, a Minimum Viable Product (MVP) to edit and produce on line training modules. In January 2015, the Personal MOOC was elected Trophée IT Innovation Forum by the members of a community of 3000 + French IT Managers (CRIP) [b].
[b] 5ème IT innovation Forum : le digital à l’honneur, Tristan Karache, iTpro.fr, 30 janvier 2015 (post in French)