| 100% | ANATOMY | 7 | Henry, elected to Britain's Royal Society at the age of 25 and who, six years later, published his 750 page tome about this |
| 26% | 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. |
| 25% | JOHNKEATS | 9 | Romantic poet who died at the age of 25, but left a lasting impression on the literary world through his odes like "To Autumn": 2 wds. |
| 24% | ETHELRED | 8 | English king (978-1016) who came to the throne at the age of about 12 and had the unfortunate epithet of "the unready" |
| 23% | SEED | 4 | Silene stenophylla produced the oldest - at about 32,000 years - one of these ever to have been successfully grown |
| 23% | NOISE | 5 | Despite being inducted in the Rock and Roll Hall of Fame last year, Radiohead still produces this, to many people |
| 23% | ALEC | 4 | ___ Greven, "How To Talk to Girls" author who published his first book at the age of 9 |
| 22% | LATERALSYMMETRY | 15 | Feature of this puzzle's grid and the answers to the six starred clues |
| 22% | ITSJUSTAPHASE | 13 | Parental comment about a teen's rebelliousness, and a hint to the last words of the starred answers |
| 21% | TDS | 3 | Last year James White managed to snag six of these, for short |
| 21% | RENAS | 5 | Bitter who was the Ambassador to Laos until this year and Sofer who starred in TV's "Always and Forever" |
| 21% | ARGON | 5 | About 1% of Earth's atmosphere, and a phonetic hint to this puzzle's gimmick |
| 21% | JFK | 3 | Initials of the US president who was elected at age 43 in 1960 |
| 21% | MOZART | 6 | Composer who wrote his first concerto at the age of five |
| 21% | ASHLEIGHBARTY | 13 | #1 tennis player who retired in 2022 at the age of 25: 2 wds. |
| 21% | DAVIDFOSTER | 11 | "Let's Talk About Love" producer who won the 1985, 1992, and 1994 Grammys for Producer of the Year, Non-Classical: 2 wds. |
| 20% | LADYTENNISSTARS | 15 | Names hidden in 17-, 25-, 51- and 65-Across (twice in the last of these) |
| 20% | TAXRETURNS | 10 | They're filed this time of year, and a hint to portions of the starred answers |
| 20% | SPLITENDS | 9 | Hair challenge … or a hint to the last words of 17-, 25-, 37- and 51-Across |
| 20% | FATHERCHRISTMAS | 15 | Britain's equivalent of Santa, and a hint to the circled letters |
| 20% | TOE | 3 | This feature of the Mendenhall Glacier, near Juneau, has retreated about 1.75 miles in the last 90 years |
| 20% | SCOTT | 5 | F. ___ Fitzgerald and his wife Zelda, who exchanged many endearing letters to one another over the years |
| 20% | ANGSTROM | 8 | Anders Jonas ___, Swedish physicist and spectroscopy pioneer who lent his name to this tiny unit of length |
| 20% | ANDREA | 6 | Tenor Bocelli who released the album “Duets” to celebrate thirty years of his musical career (October, 2024) |
| 20% | CHANGINGTABLES | 14 | Furniture for new parents ... and a literal description of the circled squares (look on top of them to find this puzzle's six-letter meta answer) |
| 20% | GETPLAYED | 9 | Fall for it, or what can happen to the last words of 17-, 25-, 38- and 56-Across |
| 20% | PAULMORPHY | 10 | Late American chess player who was called "The Pride and Sorrow of Chess," and is considered to be the best in his era (1850s): 2 wds. |
| 19% | MEATLOAF | 8 | Better known stage name of singer Michael Lee Aday who fell in Texas this year and broke his collarbone |
| 19% | HOLLANDTAYLOR | 13 | "Two and a Half Men" actress who came out of the closet in 2015 at age 72: 2 wds. |
| 19% | CLAIREFOY | 9 | Actress who's returning to "The Crown" this year for her final season of playing Queen Elizabeth: 2 wds. |