Contextualization of K2-157 c and K2-157 d in the period-mass diagram of known exoplanets with masses constrained to a precision better than 30%. Black hexagons, blue triangles, and light-blue stars represent the current sample of known neighbours of USP planets. The delimited regions A, B, and C, represent the boundaries of the Neptunian desert, ridge, and savanna in the super-Neptune and sub-Jovian domains (Castro-González et al. 2024a). Data: NASA Exoplanet Archive (24/03/2025). This plot was generated with nep-des (https://github.com/castro-gzlz/nep-des).