Which Imam of Shia has more hadiths?

As it is clear, there are many narrations from Shia Imams. (As well as the traditions of Prophet Muhammad (SAWW). I couldn’t exactly figure out which Imam has the most hadiths? Or in other word, most of Shia hadiths are from who? (Except the apostle of Allah (SAWW) who has the most narrated hadiths) *(**Note:** Although it is said that Imam Ali, Imam Sadiq and Imam Baqer (peace be upon them) have the most ahadith, but I am looking for the answer by authentic reference)*