Stable libration points do exist in multi-body orbital systems beyond classical three-body solutions, as evidenced by recent theoretical models and analyses of restricted four-body systems.
Papers [2] and [3] explicitly study libration points in restricted four-body problems, demonstrating both their existence and stability characteristics beyond classical three-body solutions. The remaining papers are either about different astronomical systems, spacecraft trajectories, or unrelated physics, leaving the supporting evidence uncontested.