Synthetic populations of planets as a function of a and M with summed-up mass fraction of all ice species in the planetary core in color. Their NGPPS identifiers are NGM10, NGM14, NGM11, NGM12, and NG75. Some observed planets around very low-mass stars are shown (Anglada-Escudé et al. 2016; Morales et al. 2019; Agol et al. 2021). Planet masses increase with host star mass, but no giant planets occur for M_⋆ < 0.5 M_⊙. The radial position where the tidal orbital decay timescale reaches 5 Gyr is indicated.