**Switzerland, Sweden, Austria, and Northern Ireland currently lead their respective 2026/27 UEFA Nations League B groups after four matchdays and sit as the strongest candidates for direct promotion to League A.** The league phase runs through mid-November, with the four group winners earning automatic promotion while runners-up enter A/B play-offs. Switzerland maintains a perfect record in Group B1, Sweden holds a strong position in B4, and Austria and Northern Ireland edge narrow leads in B3 and B2 respectively. The November fixtures will finalize the standings, with recent results and remaining schedule strength shaping trader views on promotion probabilities.