This supplementary material supports the article "PacBio SMRT Sequencing of Traditional Dairy Products from Eastern Inner Mongolia Reveals Diverse Lactic Acid Bacteria and Identifies Pediococcus Strains with Potent Cholesterol-Lowering Potential." It comprises five tables: Table S1 – Information of Traditional Dairy Samples; Table S2 – Sample Sequencing Data Evaluation; Table S3 – Statistics of Alpha Diversity Index; Table S4 – Summary of Samples; Table S5 – Characterization of Antimicrobial Substances from Lactic Acid Bacteria. These data underpin the microbial diversity analysis and functional screening reported in the study.