According to the AviList checklist v2025 (link), the taxon contains 2 species in two families, Rhynochetos jubatus(Kagu) in Rhynochetidae, andEurypygahelias(Sunbittern) in Eurypygidae.
Genus-level classification of extant Eurypygiformes following AviList
checklist v2025. (link) The number of subspecies is given in parentheses.