There are a lot of them too, but I don’t come across many of them.

Ninox owls: Laughing owl, Ninox albifacies (extinct) Rufous owl, Ninox rufa Powerful owl, Ninox strenua Barking owl, Ninox connivens Sumba boobook, Ninox rudolfi Australian boobook, Ninox boobook Rote boobook Ninox rotiensis Timor boobook Ninox fusca Alor boobook, Ninox plesseni Tasmanian boobook, Ninox leucopsis Morepork, Ninox novaeseelandiae Northern boobook, Ninox japonica Brown boobook, Ninox scutulata Hume’s boobook, Ninox obscura Chocolate boobook, Ninox randi Andaman boobook, Ninox affinis Luzon boobook, Ninox philippensis Mindanao boobook, Ninox spilocephala Camiguin boobook, Ninox leventisi Sulu boobook, Ninox reyi Cebu boobook, Ninox rumseyi Romblon boobook, Ninox spilonotus Mindoro boobook, Ninox mindorensis Least boobook, Ninox sumbaensis Togian boobook, Ninox burhani Ochre-bellied boobook, Ninox ochracea Cinnabar boobook, Ninox ios Halmahera boobook, Ninox hypogramma Buru boobook, Ninox hantu Seram boobook, Ninox squamipila Tanimbar boobook, Ninox forbesi Christmas boobook, Ninox natalis Manus boobook, Ninox meeki Papuan boobook, Ninox theomacha Speckled boobook, Ninox punctulata New Britain boobook, Ninox odiosa New Ireland boobook, Ninox variegata

And the Northern Hawk Owl is monotypic, but is closer related to Pygmy owls than the Ninox hawk owls.