Furthermore, excluding the Makimuku tumulus group (or also called Hashinaka tumulus group) that includes the Hashihaka tumulus, one of the oldest keyhole-shaped tumuli, the two groups of Oyamato and Yanagimoto, which are considered having been constructed later, can be integrated into the Oyamto/Yanagimoto tumulus group.
更に、前方後円墳の最古級に属する箸墓古墳を含む纏向古墳群（箸中古墳群）を別にすれば、少し後からの築造と考えられている大和・柳本を合わせて大和・柳本古墳群とすることができる。