Design Timelines
Designhistory.org (Western design only)
33 famous graphic design companies from around the globe
For cross-cultural Street Art from my Illustration course see my post on that blog: Street Art
African graphic design
Middle East and Africa
Kenya NGO Design
Uses flags and colours in shape of a country
NGO Report with colour-coded sections with bold colour combinations
Nigeria TV brilliant colours
Ethiopia and Eritrea
Influence of Arab Street Art
EYE Magazine: http://www.eyemagazine.com/blog/post/Pride-and-posters-in-Eritrea
More curvy designs from Ethiopia NGO with limited but bright palette
Sudan
See also http://www.designindaba.com for directory of African designers.
Islamic Design
Islamic Design
Japanese design
Cross between Zen minimalism, off-centre balance and Pokemon playfulness with very crowded collage.
https://designschool.canva.com/blog/japanese-design/
For more on my study of Japanese design, art and illustration see my post on my Illustration blog: Japanese Styles
Latin America
EYE Magazine: http://www.eyemagazine.com/feature/article/beyond-latin
European Design
Wine Bottles from different countries
Signs from London
Expressionism
EYE Magazine from Greece: http://www.eyemagazine.com/blog/post/signs-of-a-city