My top 5 (leaving aside those already named):
-Cornelia (mater gracchorum), complete correspondence
-Suetonius, "On Famous Courtesans"
-Suetonius, "On Greek Swear Words"
-Sulpicia Lepidina (Vindolanda), the complete correspondence
-Cicero's joke book, 3 vol.
add a skeleton here at some point
about 2 months ago