Similarities between structures from the crystal structure landscapes of all 28 molecules were measured using the SOAP-REMatch Kernel, which assesses similarity of structures based on a comparison of local atomic environments corresponding to spherical regions with cutoff r c around each atom. Based on the kernel-induced distance, the sketch-map dimensionality reduction technique was used to generate a low-dimensional projection of the data in which the proximity between structures is represented as faithfully as possible. Details for constructing the SOAP-REMatch Kernel and sketch-map are provided in our previous publication. A small difference is the choice of r c = 5 Å for the cut-off distance, and γ = 1 as the regularization parameter for the SOAP-REMatch Kernel. For sketch-map we used the parameters 32 σ = 0.12, a = A = 4, b = B = 6.