Modified swamp planets

After checking with Helldivers wiki, I remembered that certain swamp planets may have other modifiers than the base modifier. For instance, Caph. According to this site https://helldivers.wiki.gg/wiki/Caph , the planet has volcanic activity in addition to rainstorms. As far as I have seen, this phenomenon only occurs with swamp biome planets, so places like claorell should not be affected. I will try to post further details below as needed.