List of smallest exoplanets - Wikipedia

Pulsar planet - Wikipedia

J1407b: Super-Saturn – Exoplanet Exploration: Planets Beyond our Solar System

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List of smallest exoplanets - Wikipedia

Geosciences, Free Full-Text

Rogue planet - Wikipedia

Classifying Objects: Its Purpose and Role in Science and Education - or, in Planetary Science, Is Pluto a Planet? - Vatican Observatory

As we are constantly finding similar planet types in exo systems, is it possible that a planet's chemical constituents depend on its distance from the local star, star type, and size?

Super-Earth - Wikipedia

Discoveries of exoplanets - Wikipedia