| | Belgium (4) |
|---|
| AA Gent, | | Club Brugge, | | Racing Genk, | | Union Saint-Gilloise, |
| | Bosnia and Herzegovina (1) |
|---|
| Zrinjski Mostar, |
| |
| Croatia (1) |
|---|
| Dinamo Zagreb, |
| | Czech Republic (1) |
|---|
| Viktoria Plzeň, |
| | Denmark (1) |
|---|
| FC Nordsjælland, |
| |
| Faroe Islands (1) |
|---|
| KI Klaksvik, |
| | | | Germany (1) |
|---|
| Eintracht Frankfurt, |
|
| Greece (2) |
|---|
| Olympiacos Piraeus, | | PAOK FC, |
| | | | Israel (2) |
|---|
| Maccabi Haifa, | | Maccabi Tel Aviv, |
|
| | | |
| Norway (2) |
|---|
| Bodø-Glimt, | | Molde FK, |
| | Poland (1) |
|---|
| Legia Warszawa, |
| | |
| Slovakia (2) |
|---|
| Slovan Bratislava, | | Spartak Trnava, |
| | Slovenia (1) |
|---|
| Olimpija Ljubljana, |
| | | Swiss (2) |
|---|
| FC Lugano, | | Servette, |
|
| Turkey (2) |
|---|
| Besiktas, | | Fenerbahçe, |
| | Ukraine (1) |
|---|
| Zorya Luhansk, |
|