From the OED:
“A writer of satires or lampoons; applied to Timon of Phlius (268 BC).
1845 LEWES Hist. Philos. I. 77 His state of mind is finely described by Timon the sillograph. 1849 GROTE Hist. Greece II. xxxvii. IV. 526 The sillograph Timon of the third century B.C.
So sillographer, sillographist.
1656 BLOUNT Glossogr., Sillographer, a writer of scoffs, taunts and revilings; such was Timon. 1775 ASH, Sillographist. 1845 Encycl. Metrop. X. 393/1 Menippus indeed, in common with the Sillographers, seems to have introduced much more parody than even the earliest Roman Satirists.”
Famous sillographers include:
Timon of Philius (as noted above)