I am looking for the oldest descriptions by ‘outsiders’ of the lived reality of Early Buddhism - ideally pilgrims, visitors, invaders, etc.
I am aware of the three Chinese pilgrims Faxian (4th century), Xuanzang (7th), Yijing (7th).
And then we have early Greek reports through Megasthenes, not specifically in the Buddhist land, but still ancient India.
Are there other reports I am not aware of?