Google’s visual assets guidelines are very almost completely graphic based with barely any text. The layout is clear and concise and easy on the eyes. The content is easy to digest, there is no need to stop and read.
You could say these brand guidelines are unconventional as most guidelines appear to be similar to manuals that look like the ones you find in air fix kits. An example of a more conventional brand guideline is British Rail’s guidelines from December 1979
British Rail’s guidelines are much more serious looking with specific measurements any information on these guidelines are written in a very small font. The prioritised subject here is still the brand visuals and the rules that they are confined to, however, they are considerably bigger than the information in comparison to Google’s layout.
YouTube’s guidelines are web based with text that is selectable. The format is very basic and easy to understand.