Relations between merger and dark matter properties for the simulated galaxies in our study. The figure is organised as a matrix of scatter plots, where each row corresponds to a merger property (from left to right: mean gas fraction, total mergers since z = 5 and accreted mass fraction), and each column corresponds to a dark matter quantity (from top to bottom: spin parameter λ, halo mass $M_{200}^{\mathrm{DM}}$, and halo concentration $c_{200,\mathrm{c}}^{\mathrm{DM}}$). BL, BI and BD are shown as green circles, blue isodensity contours, and orange diamonds, respectively. On the top and right panels, histograms of the corresponding quantities are shown for BL and BD galaxies, where vertical lines represent the mean of each distribution.