| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Sára Bácskai | STK | 20 June 1999 | |
| Chiara Betti | STK | 12 March 2002 | |
| Teun Boer | STK | 5 May 2001 | |
| Andrea Cassinelli | STK | 2 September 1993 | |
| Elisa Confortola | STK | 2 April 2002 | |
| Zoë Deltrap | STK | 24 March 2005 | |
| Friso Emons | STK | 5 October 1998 | |
| Arianna Fontana | STK | 14 April 1990 | |
| Roberts Krūzbergs | STK | 18 April 2001 | |
| Łukasz Kuczyński | STK | 23 June 1999 | |
| Itzhak de Laat | STK | 13 June 1994 | |
| Natalia Maliszewska | STK | 16 September 1995 | |
| Wonjun Moon | STK | 7 March 2001 | |
| Thomas Nadalini | STK | 2 May 2002 | |
| Michał Niewiński | STK | 12 July 2003 | |
| Bence Nógrádi | STK | 29 July 2002 | |
| Félix Pigeon | STK | 18 June 2002 | |
| Selma Poutsma | STK | 14 May 1999 | |
| Lorenzo Previtali | STK | 18 July 2005 | |
| Diané Sellier | STK | 29 July 2001 | |
| Arianna Sighel | STK | 2 September 1996 | |
| Pietro Sighel | STK | 15 July 1999 | |
| Maja Somodi | STK | 15 October 2004 | |
| Luca Spechenhauser | STK | 14 December 2000 | |
| Kamila Stormowska | STK | 12 April 2000 | |
| Rebeka Sziliczei-Német | STK | 24 August 1999 | |
| Neithan Thomas | STK | 9 January 2002 | |
| Dániel Tiborcz | STK | 10 March 2000 | |
| Gabriela Topolska | STK | 15 March 2001 | |
| Martina Valcepina | STK | 4 June 1992 | |
| Jens van 't Wout | STK | 6 October 2001 | |
| Melle van 't Wout | STK | 18 February 2000 | |
| Diede van Oorschot | STK | 11 December 2003 | |
| Diána Laura Végi | STK | 30 December 2006 | |
| Michelle Velzeboer | STK | 9 March 2003 | |
| Xandra Velzeboer | STK | 7 September 2001 |