| 100% | ELIOTNESS | 9 | Al Capone adversary who only ever met him once in person |
| 32% | HOGAN | 5 | Golfer who won the British Open in 1953, the only time he ever competed in it |
| 28% | EXES | 4 | People who were once in a relationship |
| 27% | ALBOM | 5 | Mitch who wrote "The Five People You Meet in Heaven" |
| 26% | TAYLORSWIFT | 11 | Only person in the arts ever to be named Time's Person of the Year |
| 26% | CHEYENNE | 8 | Member of an American Indian people who once lived in the Great Plains |
| 26% | AREAMAN | 7 | Person who "Always Thought He'd Squander His Life Differently," in a headline from The Onion |
| 25% | YESTERDAY | 9 | Film starring Himesh Patel as the only person in the world who remembers the Beatles |
| 25% | JACOBDEGROM | 11 | Mets starting pitcher who won the NL Cy Young Award in 2018 with only 10 wins: 2 wds. |
| 25% | ISR | 3 | Country code for the nation who won its only Olympic gold ever at Athens in 2004 |
| 25% | CURIE | 5 | Marie who is the only person to win a Nobel Prize in two different science fields |
| 25% | MORTSAHL | 8 | Satirist whom Steve Allen once called "the only real political philosopher we have in modern comedy" |
| 25% | CHICAGOILL | 10 | Al Capone's gang, once? |
| 24% | FELIXHERNANDEZ | 14 | Mariners starting pitcher who won the AL Cy Young Award in 2010 with only 13 wins: 2 wds. |
| 24% | MRT | 3 | TV personality who once said in an ad, "The only thing bolder than Fuze Iced Tea is ME!" |
| 24% | JOHNBELUSHI | 11 | Comedian who played "Joliet" Jake in "The Blues Brothers", and met an untimely death, aged only 33: 2 wds. |
| 24% | HEATHLEDGER | 11 | Actor who played The Joker in "The Dark Knight," and met an untimely death, aged only 28: 2 wds. |
| 23% | FURNITURE | 9 | Al Capone's business card claimed he sold __ |
| 23% | JIMHENSON | 9 | He once had a hand in morning TV |
| 23% | USERS | 5 | People who log in |
| 23% | WILT | 4 | Chamberlain who is still the only person to ever score 100 points in an NBA game |
| 23% | KEN | 3 | He met Barbie in 1961 |
| 23% | MUIR | 4 | Whom Emerson met in Yosemite |
| 23% | RARELY | 6 | Only once in a while |
| 23% | STENO | 5 | Person in a pool, once |
| 23% | PACINO | 6 | Al __, who starred in Scarface |
| 23% | INSPECTOR | 9 | Person who supervises in detail |
| 23% | ASSESSOR | 8 | Person who evaluates in particular |
| 23% | REBEL | 5 | Person who rises in opposition |
| 23% | RACER | 5 | Person who competes in races |