All Sim's oldest stock horse association.
| Name | Age | Color | Breed | Gender |
| S Talking In Tongues | 2013 | Bay Dun Tobiano | Paint | Mare |
| S Tapitout Ten | 2002 | Perlino Blanket | Appaloosa | Stallion |
| S Tequila Chaser | 2005 | Buckskin Tobiano | Paint | Mare |
| S Thanks For Lukin | 2011 | Bay | Quarter Horse | Mare |
| S That Impressive Look | 2007 | Chestnut Few Spot | Paint Pony | Mare |
| S That Soxy Soldier | 2005 | Buckskin | Quarter Horse | Stallion |
| S The Angels Above | 2008 | Chestnut Blanket | Appaloosa | Mare |
| S The Cape | 2008 | Chestnut Tobiano | Paint | Stallion |
| S The Finer Things | 2008 | Black Overo | Paint | Stallion |
| S The Gigs Up | 2012 | Chestnut Blanket | Appaloosa | Stallion |
| S The Great Peppini | 2014 | Palomino | Quarter Horse | Stallion |
| S The Hunted | 2018 | Black Tobiano | Paint | Stallion |
| S The Last Charge | 2006 | Blue Roan Snowcap | Appaloosa | Stallion |
| S The Scarecrow | 2005 | Black Tobiano | Paint | Stallion |
| S The Sonny Chick | 2005 | Bay Overo | Paint | Mare |
| S The X Factor | 2005 | Black Tobiano | Paint | Mare |
| S This Chics Boomin | 2011 | Bay | Quarter Horse | Mare |
| S ThisHicksAWhiz | 2007 | Palomino Roan | Quarter Horse | Stallion |
| S Thumbin A Ride | 2009 | Gray | Quarter Horse | Mare |
| S Thumbs Up | 2015 | Gray | Quarter Horse | Mare |
| S Tic Toc Scotch | 2008 | Chestnut | Quarter Horse | Mare |
| S Tippity Tappity | 2010 | Chestnut | Appaloosa | Mare |
| S Topsail Hollywood | 2005 | Palomino | Quarter Horse | Stallion |
| S Twenty Eleven | 2009 | Palomino Blanket | Appaloosa | Stallion |
| S TwentyOneNOver | 2016 | Palomino | Quarter Horse | Mare |
| S UpOn Deck | 2009 | Chestnut Tobiano | Paint | Stallion |
| S Vintage Poco | 2013 | Bay | Quarter Horse | Mare |
| S Warriors Last Stand | 2008 | Grey Tobiano | Mustang | Stallion |
| S Watch Me Win | 2012 | Red Dun Overo | Paint | Mare |
| S Whata Color | 2012 | Buckskin Tobiano | Paint | Mare |
| S Whata Doozie | 2001 | Cremello Tobiano | Paint | Mare |
| S Whata Night | 2008 | Buckskin Tobiano | Paint | Stallion |
| S Whisper Softly | 2010 | Bay | Quarter Horse | Mare |
| S Whisper To Zip | 2010 | Buckskin Blanket | Appaloosa | Mare |
| S WhispNAKiss | 2010 | Bay | Quarter Horse | Mare |
| S Whistlin Dixie | 2011 | Bay | Quarter Horse | Mare |
| S Whiz InIt Fine | 2012 | Grey | Quarter Horse | Stallion |
| S Whiz On Down | 2008 | Buckskin Tobiano | Paint | Mare |
| S Whiz To Fame | 2005 | Cremello | Paint | Mare |
| S Whiz To Open | 2006 | Grullo | Quarter Horse | Stallion |
| S Whizin Hick | 2014 | Cremello Roan | Quarter Horse | Stallion |
| S Whizin ItIn White | 2008 | Gray | Quarter Horse | Stallion |
| S Whizin N Shinin | 2007 | Red Dun | Quarter Horse | Mare |
| S Whizinit Dun | 2005 | Red Dun Overo | Paint | Mare |
| S WhizinitHollywoodStyle | 2009 | Chestnut Near Leopard | Appaloosa | Mare |
| S Who Colored It | 2003 | Buckskin Tobiano | Paint | Mare |
| S WhyImBroke | 2006 | Buckskin | Quarter Horse | Mare |
| S Wild Angels | 2012 | Bay Tobiano | Paint | Mare |
| S Wild N Cute | 2003 | Buckskin Tobiano | Paint | Mare |
| S Wild N Free | 2007 | Buckskin | Paint | Mare |
| S Wild N Sacred | 2008 | Bay Tobiano | Paint | Stallion |
| S Wildly Classic | 2011 | Perlino Tobiano | Paint | Stallion |
| S Will Be Invested | 2014 | Buckskin | Quarter Horse | Mare |
| S Will Knock Ya Out | 2014 | Chestnut Tovero | Paint | Stallion |
| S Wonder Woman | 2011 | Bay | Pony of America | Mare |
| S Write The Letter | 2007 | Perlino Blanket | Appaloosa | Mare |
| S X MarksTheSpot | 2011 | Buckskin Dun | Quarter Horse | Mare |
| S Your Wildest Dream | 2008 | Bay Roan Blanket | Appaloosa | Mare |
| S YourDashinAtMe | 2007 | Chestnut Tobiano | Paint | Mare |
| S Zipped By Sensation | 2007 | Chestnut Tobiano | Paint | Stallion |
| S ZippinOnADream | 2017 | Bay Tobiano | Paint | Mare |
| S Zippos Dust Bunny | 2004 | Palomino | Quarter Horse | Mare |
| S Zips Dust Cloud | 2007 | Bay | Quarter Horse | Stallion |
| S Zips Fine Wine | 2008 | Chestnut | Quarter Horse | Mare |
| S Zips Shady Lady | 2011 | Black | Quarter Horse | Mare |
| Sacred Clues | 2013 | Sorrel | Quarter Horse | Stallion |
| Sacred Colored Drum | 2010 | Black Tovero | Paint | Stallion |
| Sacred Relic | 2004 | Bay Roan Blanket | Appaloosa | Mare |
| Sacred Touchdown | 2007 | Sorrel | Quarter Horse | Mare |
| Safiranos Fiasko MW | 2005 | Black Tobiano | Paint | Mare |
| Sage Brush Heidi | 2011 | Perlino Splash Blanket | Mustang | Mare |
| SAI Impressed | 2007 | Bay Tobiano | Paint | Mare |
| SAI Natural Glo | 2007 | Buckskin | Quarter Horse | Mare |
| SAI Whizzed N Color | 2003 | Buckskin Tobiano | Paint | Stallion |
| Salute To Royalty FS | 2008 | Black Tobiano | Paint | Stallion |
| Sams Silver Legacy ZPE | 2002 | Black Tobiano | Paint | Stallion |
| San D Bug | 2012 | Sorrel | Quarter Horse | Mare |
| San Havana | 2010 | Smoky Black Overo | Mustang | Mare |
| San Jose Jettin | 1999 | Bay | Quarter Horse | Mare |
| Sanastras Apocalypse Now FW | 2007 | Chestnut Tovero | Paint | Mare |
| Sanatras Harmony FW | 2002 | Bay Spotted Blanket | Appaloosa | Mare |
| Sand Flower | 2011 | Palomino Blanket | Appaloosa | Mare |
| Sand Piper | 1997 | Chestnut | Quarter Horse | Mare |
| Sandcat Gold | 1999 | Buckskin Blanket | Appaloosa | Mare |
| Sandmans Reyetta | 2009 | Palomino | Appaloosa | Mare |
| Sandy Doc Bar | 1995 | Bay | Quarter Horse | Mare |
| Sandys Gem ZPE | 2005 | Bay | Quarter Horse | Mare |
| Sangrias And Brandy | 2000 | Sorrel | Quarter Horse | Mare |
| Sannas Double Playgirl | 1998 | Red Roan | Quarter Horse | Mare |
| Sans Best Impression | 1997 | Bay Tobiano | Paint | Mare |
| Sans Spotted Glory | 1999 | Black Leopard | Appaloosa | Stallion |
| Santa Anita Musician | 1997 | Black | Quarter Horse | Stallion |
| Santa Crews C&H | 2008 | Black Tobiano | Paint | Mare |
| Santee Kit Kat | 2000 | Chestnut | Paint Pony | Mare |
| Santee Sammy | 1996 | Black Blanket | Paint Pony | Mare |
| Santee Sioux FS | 2010 | Dun Tobiano | Paint | Stallion |
| Saratoga Doc | 1997 | Sorrel | Quarter Horse | Mare |
| Sassy Business Moon | 2007 | Buckskin Tovero | Paint | Stallion |
| Sassy Rock Star | 2007 | Black Tobiano | Paint | Mare |
| Save the Dance OK | 2013 | Chestnut | Quarter Horse | Stallion |
| Save the Date OK | 2018 | Black Spotted Blanket | Appaloosa | Stallion |
| Savior in the Clockwork | 2012 | black overo | Paint | Stallion |
| Sayonara Leo ZPE | 2000 | Sorrel Tovero | Paint | Mare |
| Scandalous | 2005 | Black | Quarter Horse | Stallion |
| Scarin Classic Brew R | 2010 | Amber Champagne Tobiano | Paint | Stallion |
| Scarlet Kid Wv | 2002 | Sorrel | Quarter Horse | Mare |
| Scarlet Lena Doc SO | 1997 | Sorrel | Quarter Horse | Stallion |
| Scarlett of Conscience OK | 2020 | Smoky Black White Blanket | Appaloosa | Stallion |
| Scenic Sensation SHC | 2012 | Sorrel Overo | Paint | Mare |
| Scoot The Tempo | 2002 | Bay | Quarter Horse | Stallion |
| Scotch Ness Monster R | 2012 | Buckskin | Quarter Horse | Mare |
| Scotchs Legendary Monster R | 2015 | Buckskin | Quarter Horse | Mare |
| Scotchs Legendary Rebellion R | 2020 | Smoky Black Tobiano | Paint | Stallion |
| Scotchs Smashin Bourbon R | 2021 | Buckskin Tobiano | Paint | Mare |
| SCR Dun Runnin Naturally | 2011 | Buckskin Roan | Quarter Horse | Mare |
| Screwperiwinkle | 2024 | Bay Roan Fewspot | Appaloosa | Mare |
| Scribble Me Colorful BP | 2007 | Chestnut Overo | Paint | Mare |
| SCS Be My Little Star | 2013 | Sorrel | Quarter Horse | Mare |
| SCS Be My Little Star FW | 2013 | Blue Roan | Quarter Horse | Mare |
| SCS Beautiful Coco | 2012 | Bay Tobiano | Paint | Mare |
| SCS Both Sides Now | 2016 | Sorrel | Quarter Horse | Stallion |
| SCS Codys Little Jack | 2015 | Chestnut | Quarter Horse | Stallion |
| SCS Definitely Casanova MSR | 2007 | Bay Tobiano | Paint | Stallion |
| SCS Golden Jose FW | 2007 | Palomino | Quarter Horse | Mare |
| SCS Maybe Classic | 2012 | Bay Tobiano | Paint | Mare |
| SCS Miss Diamond Glow | 2012 | Chestnut | Quarter Horse | Mare |
| SCS Mister Painted Olena | 2011 | Palomino Tobiano | Paint | Stallion |
| SDs Besttime Imprint GN | 2000 | Sorrel Splashed White Overo | Paint | Mare |
| SE A Silent Mister | 2013 | Sorrel Overo | Paint | Stallion |
| SE Alotta Sweet Charisma | 2011 | Grullo | Paint | Mare |
| SE Amarillo Sky | 2015 | Bay Dun | Quarter Horse | Mare |
| SE An Awesome Tyme | 2017 | Sorrel | Quarter Horse | Mare |
| SE Angels Song | 2004 | Chestnut Overo | Paint | Mare |
| SE Apache Blues | 2015 | Blue Roan | Quarter Horse | Mare |
| SE Bid For A Kiss | 2010 | Buckskin | Quarter Horse | Mare |
| SE Bo-Tyes Are Cool | 2010 | Buckskin Overo | Paint | Stallion |
| SE Castle of Dreams | 2008 | Bay Roan Blanket | Appaloosa | Mare |
| SE Charismatica | 2016 | Chestnut Overo | Paint | Mare |
| SE Chasin the Cutie | 2015 | Buckskin Blanket | Appaloosa | Stallion |
| SE Chasin The Mist | 2005 | Buckskin Tobiano | Paint | Mare |
| SE Chex My Tye | 2014 | Perlino Overo Splash | Paint | Mare |
| SE Classic To A Tee | 2015 | Bay Frame Overo | Paint | Mare |
| SE Classy Rising Star | 2013 | chestnut overo | Paint | Stallion |
| SE Cloaked In Satin | 2014 | Bay Blanket | Appaloosa | Mare |
| SE Cool Agent | 2016 | Red Dun | Quarter Horse | Mare |
| SE Cowgirl Gunnin | 2013 | Buckskin | Quarter Horse | Mare |
| SE Cowgirls Silent Zip | 2002 | Palomino | Quarter Horse | Mare |
| SE Dance Dance Revolution | 2012 | Palomino | Australian Stock Horse | Mare |
| SE Dancin With Style | 2012 | Grulla | Quarter Horse | Mare |
| SE Dashin Lilly | 2018 | Chestnut Tobiano | Paint | Mare |