If that is the case, Suyama Tomb, the main tomb of Umami Burial Mounds, which was constructed a little before Miyayama Tomb, has a high possibility of being TAKEUCHI no Sukune's tomb.
その場合、宮山古墳より少し前に造られた馬見古墳群主な古墳が武内宿禰の墓の可能性が高い。