Notes. The column “candidates” refers to the total 506 variability-selected candidates, while column “spectra” refers to the candidates with good-quality SDSS spectra in “all,” and those with consistent redshift related with LSMGs in the “VCS.” Confirmation is based on the detection of significant broad H_α emission lines (column LSMG-EW) or other permitted lines for the objects at higher redshift (column higher-z). Suspected AGN are those with either featureless blue continua, consistent with blazars but that might in fact be stars, and unusual spectra suggestive of BAL. Plots of suspected AGN spectra are presented in Appendix B.