What is the kingdom for a jellyfish?

Kingdom: Animalia

Phylum: Cnidaria

Class: Cubozoa, Hydrozoa, Polypodiozoa, Scyphozoa, Staurozoa

There are at least 12 orders.

There are over 200 species of Scyphozoa, about 50 species of Staurozoa, about 20 species of Cubozoa, and in Hydrozoa there are about 1000-1500 species that produce medusae (and many more hydrozoa species that do not).