Graphic Design is a creative process but you must also have some guidelines when working on a project. For example; the work of others in the industry so that you can see a different approach than your own, to extend the limits of your imagination and to observe the trends.
Approximately half of the designers in this article are not so well known but that doesn’t mean they don’t create quality illustrations, it’s simply a matter of exposure. They weren’t promoted massively like others. You will see that they deserve more attention cause their work is a good example of how graphic design should be done.