Non-christian ancient references to Jesus

Except those of biased Christian writers, there isn't one writing
outside the Bible in all of ancient history that clearly refers to Jesus
of Nazareth.

Biblical Errancy Pamphlets by Dennis McKinsey Pamphlet 2 Q3.

Answer:

1. Cornelius Tacitus
2. Josephus
3. Thallus - see also Glenn Miller's remarks
4. Pliny
5. Lucian

See sources below:-

1. The Reliability of the Secular References to Jesus J. P. Holding
2. Extrabiblical, Non-Christian Witnesses to Jesus before 200 a.d. Glenn Miller
3. The Historical Jesus : Ancient Evidence for the Life of Christ by Gary R. Habermas