Mass versus orbital period diagram for all discovered planets around F-, G-, and K-type (gray dots) and M-type (blue dots) stars from the NASA Exoplanet Archive. The red star symbols represent TOI-1238 b and c. The shaded area on the left corresponds to the location of USPs. The red shaded area on the right represents the possible locations of the outercompanion to TOI-1238 (circular orbits). Venus, the Earth, Mars, Jupiter, and Uranus are also shown for comparison purposes.