For me...
Europa - This ones pretty cool since its within our solar system and when most people think of life outside of Earth, you'd expect a planet. It's one of Jupiter's moons. Apparently aquatic life is possible due to hydrothermal vents under the thick layers of ice. My guess is it's likely only smaller organisms, but I remember reading one scientist believes octopus-like creatures could also live on it. Surface life is impossible to my knowledge, at least by our standards of life
Trappist-1e - If I remember correctly Trappist-1's solar system in general has a few candidates for life. Scientists believe this planet is the most likely to be similar to Earth. It's within a habitable zone, likely to have liquid water, similar size to Earth, and even has pretty close orbital period. I like to imagine that life there is similar to Earth, maybe even have a species similar to us (not necessarily physically but mentally). I wonder if they're also researching our solar system and wonder about us lmao