For a similar chart (that is potentially even harder to read and visualize somehow) this came out a couple years ago wrt people actually in certain occupations

For a similar chart (that is potentially even harder to read and visualize somehow) this came out a couple years ago wrt people actually in certain occupations rather than for graduates in certain disciplines. https://www.bloomberg.com/graphics/2016-who-marries-whom/ https://www.bloomberg.com/graphics/2016-who-marries-whom/