I tend to be really impressed with the work Christine Santana does for Stonemaier (Scythe, Wingspan), and Mr Cuddington aka Lina Cossette & David Forest (Tidal Blades).
What are your favorite games from a graphic design perspective? Where have you seen graphic design really excel in making a game easier to understand, more intuitive, and visually awesome? Who are some other great modern board game graphic designers?