| 100% | ANON | 4 | Short for unknown writer |
| 84% | ANON | 4 | Unknown writer, for short |
| 79% | ANON | 4 | Writer unknown, for short |
| 60% | ANON | 4 | Unknown author, for short |
| 60% | ANON | 4 | Unknown source, for short |
| 60% | ANON | 4 | Unknown composer, for short |
| 60% | ANON | 4 | Unknown person, for short |
| 59% | ANON | 4 | Unknown quote source, for short |
| 59% | MSS | 3 | Writer's submissions, for short |
| 58% | ANON | 4 | Author unknown, for short |
| 58% | ANON | 4 | User unknown, for short |
| 58% | ANON | 4 | ''Author unknown,'' for short |
| 58% | STENO | 5 | Shorthand writer, for short |
| 58% | ANON | 4 | Mystery writer, for short |
| 58% | DOC | 3 | Prescription writer, for short |
| 58% | STENO | 5 | Office writer, for short |
| 57% | STENOS | 6 | Shorthand writers, for short |
| 57% | MDS | 3 | Script writers, for short |
| 57% | OHENRY | 6 | Short-story writer famous for twist endings |
| 57% | ANON | 4 | Of unknown authorship, for short |
| 57% | TBA | 3 | As yet unknown, for short |
| 56% | OHENRY | 6 | Short story writer known for his surprise endings |
| 56% | ANON | 4 | "Fairy tale author unknown," for short |
| 56% | ANON | 4 | "Author's name unknown," for short |
| 56% | ENG | 3 | Essay writer's class, for short |
| 55% | ANON | 4 | Someone whose identity is unknown, for short |
| 55% | ANON | 4 | One whose identity is unknown, for short |
| 55% | ANON | 4 | "Author's identity is unknown," for short |
| 54% | STENO | 5 | Shorthand writer in a courtroom, for short |
| 54% | MLK | 3 | "Letter From Birmingham Jail" writer, for short |