Are there many fictional people in sunni isnads?
Sunnis generally (sometimes rightly) point out the political biases and flawed methodology of Shia hadiths, while also showing some ahistorical people in Shia isnads (such as a donkey and a man coming from the sky but not sure if it is true). It is also known in western scholarship that sunni isnads are also unreliable and likely to be forged to meet the later standards. But how about the people in these isnads? Are they historical?