There are Jupiter-like planets that are hot, there are other planets that are icy, there are water worlds and there are rocky planets like the Earth, so-called "super-Earths," and there have even been planets that have been speculated diamond worlds.
Hay planetas similares a Júpiter que están calientes, hay otros planetas congelados, hay mundos de agua, y hay planetas rocosos como la Tierra, llamados "súper-Tierras", hasta incluso planetas que dicen ser mundos de diamantes.