Fortunately I ran across SANS FORM, where actual graphic designs are on tee shirts. (And bags, sweatshirts, etc.) Someone buy me all of them.
Here's a short description of the brand from their website:
Sans Form delivers modern and timeless art in the form of quality handcrafted goods.
"Sans Form is a modernist label specializing in reductive and modernist design culture. Founded in Italy by Andrea and Cristina, husband and wife, with a common goal of building a brand that reflects and develops their own creative interests and lifestyle. We find and foster unique artistic talents by providing a platform to create fine art and high quality consumer goods. Based both in Italy and the US, our design and production process allows us to experiment with a wide variety of creative styles and ideas. The result of this experimentation are themed collections of art, apparel and accessories whose aim is to communicate compelling ideas and the cultural value of reductive and modernist design"
Here I've shared some of my favorite designs from their site, but there are so many more great minimalist designs - they even sell prints.