Which phyla are more closely related to each other Sponges cnidarians flatworms roundworms arthropods mollusks annelids echinoderms or chordates?

Sponges (Porifera) are the most basal and diverge early in the evolutionary tree, making them more distantly related to the other phyla. Cnidarians (such as jellyfish and corals) share a closer relationship with the bilaterians, which include flatworms, roundworms, arthropods, mollusks, annelids, echinoderms, and chordates. Among these, arthropods, mollusks, and annelids are more closely related to each other and form a clade known as Lophotrochozoa and Ecdysozoa. Echinoderms and chordates are grouped within the Deuterostomia, indicating a closer evolutionary relationship between them compared to the remaining phyla.