Synthetic populations of planets resulting from the two Monte Carlo runs of 20000 extractions each with GroMiT. The plot shows the final masses and orbital positions of the simulated growth tracks (see Fig. 4 for illustrative examples of the growth tracks). The red symbols are associated with planets formed in discs dominated by mm-sized pebbles, and the blue symbols with planets formed in discs dominated by cm-sized pebbles. TOI-5398 b and c are represented by the two larger cyan-filled circles. The black box highlights the region of the parameter space populated by the successful solutions (see main text for details).