| 100% | IDOL | 4 | Reality series hosted by Ryan Seacrest, to fans |
| 59% | AMERICANIDOL | 12 | American reality show hosted by Ryan Seacrest, where contestants compete to be the best singer, chosen by the viewers: 2 wds. |
| 59% | IDOL | 4 | Reality show hosted by Ryan Seacrest, for short |
| 48% | IDOL | 4 | "American ___" (Show hosted by Ryan Seacrest) |
| 48% | IDOL | 4 | Talent show hosted by Ryan Seacrest, familiarly |
| 48% | IDOL | 4 | TV competition hosted by Ryan Seacrest, familiarly |
| 47% | IDOL | 4 | TV singing competition hosted by Ryan Seacrest, familiarly |
| 47% | IDOL | 4 | Show that was hosted by Ryan Seacrest, for short |
| 47% | BIGBROTHER | 10 | CBS reality series hosted by Julie Chen: 2 wds. |
| 45% | EVE | 3 | "Dick Clark's New Year's Rockin' ___" (broadcast hosted by Ryan Seacrest) |
| 44% | IDOL | 4 | Ryan Seacrest's reality series, for short |
| 42% | SAJAK | 5 | Pat replaced by Ryan Seacrest as the host of "Wheel of Fortune" |
| 39% | RYAN | 4 | ___ Seacrest, former host of the reality TV series "American Idol" |
| 35% | THEVOICE | 8 | American reality show hosted by Carson Daly, which works in a format similar to 21-Across: 2 wds. |
| 35% | DRAGRACE | 8 | Reality competition hosted by RuPaul |
| 34% | RACE | 4 | "The Amazing ___," TV series hosted by Phil Keoghan |
| 34% | NOW | 3 | "Documentary ___!" (IFC mockumentary series hosted by Helen Mirren) |
| 34% | JOBS | 4 | "Dirty ___" (Discovery Channel series hosted by Mike Rowe) |
| 34% | WEEK | 4 | "Shark ___" (Discovery Channel series hosted by Josh Gates) |
| 34% | CANDID | 6 | "___ Camera" (classic TV series hosted by Allen Funt) |
| 34% | BETWEENTWOFERNS | 15 | Funny or Die web series hosted by Zach Galifianakis |
| 34% | TNS | 3 | Short-lived series hosted by Larry Wilmore, for short |
| 33% | DEAL | 4 | "Let's Make a ___" (CBS series hosted by Wayne Brady) |
| 33% | TITAN | 5 | "The ___ Games" (NBC sports competition series hosted by Dwayne Johnson) |
| 33% | IDOL | 4 | Reality series revived by ABC in 2018, familiarly |
| 33% | LATESHOW | 8 | With "The," after-hours series hosted by Stephen Colbert: 2 wds. |
| 33% | EVA | 3 | "___ Longoria: Searching for Mexico" (CNN series hosted by the namesake actress) |
| 33% | DANCE | 5 | "So You Think You Can ___" (competition series hosted by Cat Deeley) |
| 33% | WHOSE | 5 | "___ Line Is It Anyway?" (improv comedy series hosted by Aisha Tyler) |
| 32% | AHS | 3 | Long-running Ryan Murphy anthology series, to fans |