Making Classic GNNs Strong Baselines Across Varying Homophily: A Smoothness– Generalization Perspective - Gu, Ming; Zheng, Zhuonan; Zhou, Sheng; Liu, Meihan; Chen, Jiawei; Tan, Qiaoyu; Li, Liangcheng; Bu, Jiajun (Advances in Neural Information Processing Systems, 2025)