Foundation Models in Robotics: A Comprehensive Review of Methods, Models, Datasets, Challenges and Future Research Directions. - Aggelos Psiris; Vasileios Argyriou; Evangelos K. Markakis; Panagiotis Sarigiannidis; Efstratios Gavves; Kostas Bekris; Arash Ajoudani; Georgios Th. Papadopoulos (CoRR, 2026)