| Country ↑ | Members | Leaders | Guests | G | S | B | H | Total |
|---|---|---|---|---|---|---|---|---|
 Bosnia and Herzegovina | 4 | 2 | - | - | - | - | - | - |
 Bulgaria | 5 | 2 | - | - | - | - | - | - |
 Cyprus | 4 | 2 | - | - | - | - | - | - |
 Greece | 4 | 2 | - | - | - | - | - | - |
 Montenegro | 4 | 2 | - | - | - | - | - | - |
 North Macedonia | 6 | 2 | - | - | - | - | - | - |
 Romania | 4 | 2 | - | - | - | - | - | - |
 Serbia | 8 | 4 | - | - | - | - | - | - |
 Türkiye | 4 | 2 | - | - | - | - | - | - |