| 100% | YOM | 3 | ___ Kippur (September 15-16, 2021) |
| 53% | ZAKIYA | 6 | With 15 and 16 Across, writer with the 2021 debut novel "The Other Black Girl" |
| 47% | HISPANIC | 8 | __ Heritage Month: September 15 to October 15 |
| 44% | JUSTICE | 7 | 2021 #1 album that includes 16-Across |
| 43% | AUTUMN | 6 | In 2021, it begins September 22nd |
| 42% | XYPANICHERITAGE | 15 | It's celebrated for 30 days each year beginning September 15 |
| 42% | FRASIER | 7 | "Cheers" spinoff that debuted September 16, 1993 |
| 41% | LEVITATINGMAN | 13 | Magic trick performed at 15-, 16- and 17-Down |
| 41% | OLDER | 5 | Like 16 vis-à-vis 15, agewise |
| 41% | DEAN | 4 | Character actor Harry ___ Stanton, who died on September 15 at age 91 |
| 40% | LIZTRUSS | 8 | She first met 15 Across last September 9th |
| 40% | RICOCASEK | 9 | Lead singer of The Cars who passed away September 15, 2019 (2 wds.) |
| 38% | PRECIOUSLEE | 11 | Model on the cover of Vogue's 2021 September issue |
| 38% | THESTEROIDERA | 13 | Period during which 15-, 16-, 45-, and 58-Across played: 3 wds. |
| 36% | AGATHACHRISTIE | 14 | Creator of Hercule Poirot and Miss Marple who was born on September 15, 1890 (2 wds.) |
| 35% | LOST | 4 | Former ABC drama that involved the number sequence 4, 8, 15, 16, 23, 42 |
| 35% | GODZILLA | 8 | Movie monster from Tokyo who fights 15-Across in a 2021 film |
| 35% | MEDIAN | 6 | 15 in the set {4, 8, 15, 16, 23} |
| 34% | THEUK | 5 | What 15-, 16-, 26-, and 34-/44-Across make up together, for short: 2 wds. |
| 34% | GUACAMOLE | 9 | National ___ Day (September 16) |
| 33% | ANDTHEOSCAR | 11 | With 57-Across, phrase that introduces the winner at the 15-Across 16-Across |
| 32% | EMINEM | 6 | 16-Across, 21-Across, and 42-Across rapper who has won 15 Grammy Awards from 44 nominations |
| 32% | RAINBOWROWELL | 13 | 15-Across and 46-Across writer whose third "Simon Snow" novel was published in 2021 (2 wds.) |
| 32% | ORU | 3 | Sch. in Tulsa, Okla. whose men's basketball team made the Sweet 16 in 2021 |
| 32% | MINT | 4 | Treasury Department unit once located in 16- and 55-Across and 15- and 28-Down |
| 31% | KINGRICHARD | 11 | 2021 sports biopic about two professional tennis legends starring 15-Across, 47-Across, and Will Smith (2 wds.) |
| 30% | LENCARIOU | 9 | 15-Across, 33-Across, and "Blue Bloods" actor who turned 85 years old on September 30, 2024 (2 wds.) |
| 29% | BREAKITOFF | 10 | 16-Across single that reached number 30 on the "Billboard" Hot Rock & Alternative Songs chart in 2021 (3 wds.) |
| 29% | THECARDCOUNTER | 14 | 2021 film starring 15-Across as a mysterious financier and 31-Across as a low-stakes gambler (3 wds.) |
| 29% | ERICHOLDER | 10 | U.S. attorney general, 2009-15, and a hint to 16-Across and 15- and 28-Down |