| Belgium (2) |
|---|
| Anderlecht, | | Racing Genk, |
| | Bosnia and Herzegovina (1) |
|---|
| Zrinjski Mostar, |
| | Bulgaria (2) |
|---|
| Levski Sofia, | | Ludogorets, |
| |
| | England (1) |
|---|
| Crystal Palace, |
| | France (1) |
|---|
| RC Strasbourg Alsace, |
| | Gibraltar (1) |
|---|
| Lincoln Red Imps, |
|
| Greece (3) |
|---|
| AEK Athens, | | Panathinaikos, | | PAOK FC, |
| | Israel (1) |
|---|
| Maccabi Tel Aviv, |
| | Netherlands (2) |
|---|
| AZ, | | FC Utrecht, |
| | North Macedonia (1) |
|---|
| KF Shkëndija, |
|
| Norway (1) |
|---|
| Fredrikstad FK, |
| | | Portugal (1) |
|---|
| Sporting Braga, |
| |
| | Slovakia (1) |
|---|
| Slovan Bratislava, |
| | |
|