| 100% | EDMUNDHILLARY | 13 | Mountaineer who climbed Mount Everest with Tenzing Norgay and became the first climbers to have reached the summit of the mountain: 2 wds. |
| 54% | JORDANROMERO | 12 | Mountaineer who climbed Mount Everest at the age of 13 and later became the youngest climber in the world to complete the Seven Summits: 2 wds. |
| 48% | MELISSAARNOT | 12 | Mountaineer who climbed Mount Everest six times and became the first woman to survive a descent without supplemental oxygen: 2 wds. |
| 37% | EDMUNDHILLARY | 13 | New Zealand mountaineer who was one of the first two people to conquer Mount Everest: 2 wds. |
| 35% | STEVIENICKS | 11 | American singer and songwriter who became the first woman to be inducted twice into the Rock and Roll Hall of Fame: 2 wds. |
| 34% | ROALDAMUNDSEN | 13 | Norwegian explorer who in 1911 became the first person to reach the South Pole, one month ahead of 18-Across: 2 wds. |
| 34% | TENZINGNORGAY | 13 | Sherpa who was one of the first two people to conquer Mount Everest: 2 wds. |
| 33% | IGGYAZALEA | 10 | "Fancy" singer featured on "Problem" who in 2014 became the second ever to be simultaneously #1 and #2 with her first two hits: 2 wds. |
| 33% | HANKAARON | 9 | Braves and Brewers star who gained first-ballot induction to the Baseball Hall of Fame in 1982 with 97.8% of the vote: 2 wds. |
| 33% | MARCOPOLO | 9 | Venetian explorer, who is known to be the first to have detailed accounts of travel to, and about China: 2 wds. |
| 33% | EDMUND | 6 | Hillary who climbed Mount Everest with Tenzing Norgay |
| 32% | JOHNMADDEN | 10 | Football player turned broadcaster who was the first one to have worked for all of the "Big Four" TV networks: 2 wds. |
| 32% | THEBEATLES | 10 | "I Want to Hold Your Hand" and "She Loves You" group who in 1964 became the first ever to be simultaneously #1 and #2 with their first two hits: 2 wds. |
| 32% | SHERYLSWOOPES | 13 | Basketball Hall of Fame inductee who was the first player to sign with the WNBA: 2 wds. |
| 31% | EVELYNASHFORD | 13 | The first track and field athlete to run 100 meters under 11 seconds in an Olympic Games and who has won a total of 5 Olympic medals: 2 wds. |
| 31% | KATYPERRY | 9 | "Roar" singer with more than 42 million YouTube subscribers who was the first artist to have multiple music videos reach one billion views on YouTube (2 wds.) |
| 31% | MARTINBRODEUR | 13 | Former New Jersey Devils' goaltender who has the highest number of wins with 691 wins and was elected to the Hockey Hall of Fame in 2018: 2 wds. |
| 31% | MARTHAGRAHAM | 12 | American dancer who was the first dancer to perform at the White House and to receive the Presidential Medal of Freedom: 2 wds. |
| 30% | HILLARY | 7 | Edmund —, New Zealand explorer; first man to reach the summit of Mount Everest |
| 30% | WARRENGHARDING | 14 | U.S. president who, in 1922, became the first president to have his voice transmitted on the radio (3 wds.) |
| 30% | RAMIMALEK | 9 | Actor who became the first one of Egyptian heritage to win an Oscar for Best Actor in 2019: 2 wds. |
| 30% | JOHNOHURLEY | 11 | "Family Feud" host from 2006 to 2010, and runner-up on the first season of "Dancing With the Stars": 2 wds. |
| 30% | JAMESMADISON | 12 | U.S. president who was the first to have served in the House of Representatives, the first to have an inaugural ball, and the first to wear long pants instead of knee breeches (2 wds.) |
| 29% | TOMSEAVER | 9 | Four-team star who gained first-ballot induction to the Baseball Hall of Fame in 1992 with 98.8% of the vote: 2 wds. |
| 29% | NOLANRYAN | 9 | Four-team star who gained first-ballot admission to the Baseball Hall of Fame in 1999 with 98.8% of the vote: 2 wds. |
| 29% | SUSANAMARTINEZ | 14 | In 2010, she became the first woman to be elected governor of New Mexico: 2 wds. |
| 29% | NIKKIHALEY | 10 | In 2010, she became the first woman to be elected governor of South Carolina: 2 wds. |
| 29% | RICHARDBYRD | 11 | American explorer who in 1929 became the first person to fly over the South Pole: 2 wds. |
| 28% | STEPHENSTILLS | 13 | American singer and songwriter who is the first artist to be inducted twice on the same night into the Rock and Roll Hall of Fame: 2 wds. |
| 28% | IGGYAZALEA | 10 | "Fancy" singer who is one of only two music acts to have their first two hit singles rank #1 and #2 simultaneously on the U.S. "Billboard" Hot 100 chart (2 wds.) |