I put at back Buddhayana because
200 The author uses the Pali term ‘pāramī’ for perfection. Basically, there are 10 perfections in the Theravada Pali canon. The 10 perfections become 30 by multiplying the 3 levels of quality in performing each perfection. The author, who belongs to the Southern School (Theravada), has desired to fulfil the 30 perfections in order(and become a Buddha)
This is Interesting
I didn’t read a lot but I don’t know if all disciples followed Buddhayana.