All of the datasets used in this work are publicly available, either through our github or for download from websites listed in their subsections below. Here, we briefly describe the data distribution for the OCELOT, OMDB, and PAH101 datasets, shown in Figure . The distribution of the total and test dataset of OCELOT and OMDB are shown in blue and orange, respectively, with the mean bandgap value of the total and test dataset shown with dashed red and purple lines, respectively. For PAH101, the mean bandgap value is shown with a dashed red line. As can be seen, OCELOT and OMDB have fairly normal distributions, more so for OCELOT than OMDB. The mean bandgap values for the OCELOT and OMDB datasets are 2.312 eV and 3.047 eV, respectively. Generally, the OMDB has a larger range of bandgaps, ranging from just above 0 to almost 8 eV while the OCELOT database ranges from just above 0 to just above 4 eV. The OMDB is available for download at: . OCELOT is available for download at: