Kazuko TOKIWAI considers that old genealogies of The Tale of Genji seem to have been handed down in the complicated process, and they can be classified into two groups of 'Kujoke-bon manuscript' which is close to the original when it was completed and other group, stating that 'it is impossible to classify them clearly except 'Kujoke-bon,' which seems to be close to the original manuscript.'
なお、常磐井和子は「源氏物語古系図は複雑な伝流過程をたどっていると見られ、原型に近いと見られる「九条家本」系統以外は明確な分類が出来ないものがある」として成立時の原型に近い「九条家本」系統とその他の2系統に分類でよいとしている。