The original Fig. 2 in this paper contains a single inconsequential typo in each of the RRR, YRR, and YRY cubes. Specifically, the vertex labeled GCA in the RRR cube should read AAA, the vertex labeled GCA in the YRR cube should read CGA, and the vertex labeled GCA in the YRY cube should read CAT. These typos had no impact on our analyses. For clarity, Fig. 2 is reproduced below with these typos corrected.