| 2017 – 2023 (2025) | 2019 – 2025 (2027) | 2023 – 2029 |
| Louis Bouchard (US) | Bruce Balcom (CA) | Martin Bruschewski (DE) |
| Gisela Guthausen (DE) | Stephen Beyea (CA) | Hilary Fabich (US) |
| Meghan Halse (GB) | Gillian Goward (CA) | Einar Fridjonsson (AU) |
| Miki Komlosh (US) | Shaoying Huang (SG) | Petrik Galvosas (NZ) |
| Katsumi Kose (JP) | Huabing Liu (CN) | Michael Johns (AU) |
| Andreas Pohlmeier (DE) | Thomas Oerther (DE) | Dimitrios Sakellariou (BE) |
| Joseph Seymour (US) | Ray Tang (US) | Siegfried Stapf (DE) |
| Bernhard Siow (GB) | Camilla Terenzi (NL) | Velencia Witherspoon (US) |
| Zheng Xu (CN) | Dan Xiao (CA) | |
| Wenwei Yu (JP) |
