Monocle Magazine has an impressive roster of illustrators. Featured above is work by: Andrew Holder, Takashi Kuwahara, Raymond Biesinger, Satoshi Hashimoto, and Adrian Johnson. Each of them contributes to the magazine periodically.
Outside of the Monocle world, I am most familiar with Adrian Johnson. (Check out the Grain Edit interview). For whatever reason I come across his illustrations all the time. However, of the four listed above, Biesinger’s work resonates the most with me. I love his simple graphic approach and limited color palette. You can browse his work, Monocle and otherwise, on his website.