ClubLocationLeagueTierFounded
Nsoatreman—Dissolved 2024—2021
Olympiakos B—Super League Greece 2—2021
Olympic Tashkent—Oʻzbekiston Superligasi—2021
One Knoxville—USL League One—2021PAOK B—Super League Greece 2—2021
Palayesh Naft Bandar Abbas—Azadegan League—2021Panathinaikos B—Dissolved 2024—2021
Patriotas—Primera B Nacional—2021Payam Toos Khorasan—Khorasan Province League—2021
Pokhara Thunders—Nepal Super League—2021
Pro Novara—Eccellenza Piemonte-Valle d'Aosta—2021
Proxy—Egyptian Second Division A—2021
Racing Mérida City—Primera Extremeña—2021
Raya2—Dissolved 2023—2021
Royal AM—Dissolved 2025—2021
SK Roeselare—Belgian National Division 1 - VV—2021
SamWest Blackboots—Kenyan National Super League—2021San Jose Earthquakes II—MLS Next Pro—2021
San José FC—Dissolved 2023—2021Sangiuliano City—Serie D - Girone D—2021Santa Cruz FC—Dissolved 2022—2021
Saransk—Dissolved 2022—2021
Simcoe County Rovers—League1 Ontario—2021
Skanstes SK—Latvijas Nākotnes Līga—2021SoccerViza—Dissolved 2023—2021Spokane Velocity—USL League One—2021
Sport Sinop—Campeonato Mato-Grossense - 1ª Divisão—2021St. Louis City 2—MLS Next Pro—2021Superior Hotels—Kenyan Division Two - Central—2021
TWL Elektra—Regionalliga Ost—2021