Pairwise relationships between all disk parameters, sorted by cluster affiliation. For 5000 randomly sampled planets in the population, each parameter is plotted against every other parameter while the color defines the planet’s cluster. The diagonal panels show the univariate distributions of the respective parameters, again colored by cluster assignment. Planet species most clearly separate in a_start − M_solid,0 space, and the formation of giant planets (yellow) requires large solid reservoirs and a narrow range of initial orbital distance.