The 12 successors hadith is common between Sunnis and Shiis.Even then the Twelver Shia are the only ones who uniquely have 12 Imams all of them being from Quraysh. This in itself is an important indication.
There are other explicit traditions in the Shii collections in which the Prophet names the 12 Imams. This can be found in Kamal al-Din of Sh. al-Saduq as one such example.