The mass and radius of our two models for GJ 12 b (circular and eccentric orbits) compared to various composition models from L. Zeng et al. (2019), as well as a steam atmosphere model from M. Turbet et al. (2020) and an H/He atmospheric model from M. C. Nixon & N. Madhusudhan (2021) and M. C. Nixon et al. (2024). The star corresponding to the eccentric-orbit model has been shifted slightly upward so that the errors of the two points are distinguishable. We note that the 50% water model, which is from L. Zeng et al. (2019), assumes a planet temperature of 300 K, which is very close to the actual equilibrium temperature of this planet.