I said that Wikipedia says it, not that it is true.
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These are creative ideas! I'd like to create a system with life on every object. just need to figure out how :/
All planet types apart from selenas and asteroids can have life.
Terra - Marine, Terrestrial
Oceania - Marine
Desert - Terrestrial
Titan - Marine, Terrestrial, Subglacial (I don't think Subglacial is compatible with the other two, never seen all three ever, even with 50 ly search radius in star browser)
Ice Giant - Aerial
Gas Giant - Aerial
Ice World - Subglacial
So, if yow wanna create a system with life on every non-star object, NO selenas or asteroids.
Space is too big to understand, so do not try to understand.