Formation tracks (populations L_no (left) and L (right)) of nine groups of systems that form similar planets. The colour-coding (no physical meaning) is as follows: green (0.1,1), cyan (1,0.5), blue (10,0.5), red (0.05,3), orange (0.5,1), yellow (2,1),brown (0.05,7), pink (1,7), and violet (0.2,30). The groups are defined by the final distance and mass of the formed planets (AU, M_⊕) and are explained in the text. Each row probes the formation of planet types with increasing final mass at different separations from the star.