From my understand (degree form YouTube), our understanding of what is needed for life is liquid water and free energy.
Which means earth like is most likely, but there are other alternatives. For example, the moon of Jupiter (Titan iirc) is ice covered but has liquid water beneath the surface, and the gravity of Jupiter should provide the free energy so that’s the Vegas favourite for finding extraterrestrial life within our solar system.
Water isn't necessary (in theory)
https://en.wikipedia.org/wiki/Hypothetical_types_of_biochemistry
