| 100% | SOLARCAR | 8 | Sunmobile was the first one (1955) |
| 69% | SEER | 4 | Melampus was the first one |
| 69% | POPE | 4 | Peter was the first one |
| 69% | MONTH | 5 | January is the first one |
| 68% | THREEDMOVIE | 11 | "Bwana Devil" was the first one |
| 68% | COMSAT | 6 | Early Bird was the first one |
| 68% | POPE | 4 | St. Peter was the first one |
| 67% | WIN | 3 | Be the first one to finish a race, say |
| 67% | ILL | 3 | "___ be the first one to finish the assignment." |
| 67% | IDOL | 4 | Kelly Clarkson was the first one, informally |
| 66% | STATEPARK | 9 | Niagara Reservation was the first one in 1885 |
| 66% | BABYBOOMER | 10 | Bill Clinton was the first one elected president |
| 66% | POPE | 4 | Francis is the first one from the Americas |
| 66% | EMIR | 4 | Mohammed bin Thani was the first one for Qatar |
| 66% | SAINT | 5 | Ulrich was the first one created by a pope |
| 66% | STEP | 4 | "Pierce film with fork" might be the first one |
| 65% | TEDTALK | 7 | The first one was delivered in 1984 |
| 65% | EMAIL | 5 | The first one was sent in 1971 |
| 65% | WORD | 4 | The first one in this clue is "The" |
| 64% | MARX | 4 | Chico was the first-born one |
| 64% | ALMANAC | 7 | The first one printed in America was in 1639 |
| 64% | SSN | 3 | The first one was issued in 1936, for short |
| 64% | IDOL | 4 | Kelly Clarkson was the first "American" one |
| 64% | IDOL | 4 | Kelly Clarkson was the first American one |
| 63% | HINDU | 5 | Rishi Sunak was the first one to become a British prime minister |
| 63% | ZACH | 4 | ___ Gowen, professional wrestler who is the first one-legged competitor in WWE |
| 63% | POPEMOBILE | 10 | The first one was a modified Ford D-Series truck |
| 63% | MASON | 5 | Elizabeth Aldworth was the first recorded female one |
| 63% | EMAIL | 5 | Clinton was the first president to send one |
| 63% | JESUIT | 6 | Francis is the first pope to be one |