Logo & Images
Presentation
GSuite's template gallery shows not only the master for presentations but also the English/German ARTS company presentation and a presentation with personal contact slides. This screenshot shows you how to get to the template gallery:
Docs
The GSuite Docs template gallery shows templates for business letters for the different business units (with and without logo) and Word templates for continuous text (including cover page + table of contents)
All information regarding the Corporate Design and using of colours and logos you can find here