Many of these Obas have the special name they call them apart from being called the Oba of so-so land. Some of these names we might know but we can always add to the collection you have at hand.
Here are some titles of kings/ traditional rulers in Yoruba land.
*Alaafin of Oyo
*Ooni of Ife,
*Alake of Egba
*Olubadan of Ibadan
*Awujale of Ijebu-Ode
*Alaketu of Ketu
*Olowu of Owu
*Orangun of Ila
*Olupopo of Popo
*Eleko of Eko
*Deji of Akure
*Eleruwa of Eruwa
*Olu of Itori
*Alaga of Aga-Olowo
*Olusi of Usi
*Olofa of Ofa
*Timi of Ede
*Onidanre of Idanre
*Soun of Ogbomosho
*Akarigbo of Remo
*Olu of Mushin
*Alaperu of Iperu
*Emir of Ilorin
*Onisaga of Isaga
*Onikoyi of Ikoyi
*Olubara of Ibara
*Onisabe of Isabe
*Elejigbo of Ejigbo
*Lalupo of Gbagura
*Oluyewa of Aiyetoro
*Olota of Ota
*Olu of Ilaro
*Olufi of Gbogan
*Okere of Saki
*Ataoja of Osogbo
*Olowo of Owo
*Attah of Ayiede Ekiti
*Osemawe of Ondo
*Ebumawe of Ago-Iwoye
*Owa Obokun of Ijesa
*Oba of Okeho
*Ayangburen of Ikorodu
*Asero of Ijero
*Ogoga of Ikere
*Orimolusi of Ijebu-Igbo
*Eleruwa of Eruwa
*Akaran of Badagry
*Alakire of Ikire
*Osolo of Isolo
*Olota of Ota
*Olu of Ilaro
*Onikoyi of Ikoyi
*Apetu of Ipetumodu
*Olu of Mushin
*Alaye of Efon Alaaye
*Ewi of Ado-Ekiti
