| 100% | ORPAH | 5 | Sister-in-law of Ruth |
| 85% | NAOMI | 5 | Mother-in-law of Ruth in the Old Testament |
| 82% | NAOMI | 5 | Mother-in-law of Ruth |
| 79% | CIRCE | 5 | Sister-in-law of Minos |
| 79% | ETHEL | 5 | Sister-in-law of Jackie |
| 78% | MADAMENHU | 9 | Outspoken sister-in-law of Vietnam's President Diem in the 1960s |
| 76% | OHHENRY | 7 | Sister brand of Baby Ruth |
| 76% | BONAFIDES | 9 | In law, honesty of intention |
| 75% | KATE | 4 | Royal sister-in-law of Meghan |
| 75% | NISI | 4 | In law, a type of decree |
| 73% | MARIS | 5 | Surpasser of Ruth in 1961 |
| 72% | DUBOIS | 6 | Blanche —, sister-in-law of Stanley Kowalski in 1947 Tennessee Williams stage play A Streetcar Named Desire |
| 72% | FRONTIERJUSTICE | 15 | Law of the jungle, in the Old West |
| 72% | BOAZ | 4 | Husband of Ruth, in the Bible |
| 71% | MARIS | 5 | Breaker of Ruth's record in 1961 |
| 70% | RHEA | 4 | Sister of Phoebe, in myth |
| 70% | AMY | 3 | Sister of Jo, in literature |
| 70% | JANE | 4 | Sister of Dick, in primers |
| 70% | OPHELIA | 7 | Sister of Laertes, in "Hamlet" |
| 70% | ANNA | 4 | Sister of Elsa in "Frozen" |
| 70% | ELSA | 4 | Sister of Anna in "Frozen" |
| 70% | LUNA | 4 | Sister of Sol, in myth |
| 69% | NEWTON | 6 | He established three laws of motion in physics |
| 69% | LISA | 4 | Sister of Bart, in "The Simpsons" |
| 69% | LEAH | 4 | Sister of Rachel, in the Bible |
| 69% | MARY | 4 | Sister of Lazarus, in the Bible |
| 69% | LEIA | 4 | Sister of Luke, in sci-fi |
| 69% | SELENE | 6 | Sister of Helios in Greek myth |
| 69% | LISA | 4 | Sister of Bart in "The Simpsons" |
| 69% | PHILOMELA | 9 | Sister of Procne in Greek mythology |