Supplementary material to DESI's publication "Highly Efficient Selection of High-Redshift Emission-Line Galaxies for future DESI-like Surveys with Deep Multi-band Imaging" to comply with the data management plan. Fig 1: Errors (before multiplying by 100) on the BAO scale parameter (both line-of-sight and transverse). Fig 2: Colors for both HSC deep and wide and with spectroscopic redshifts for objects passing reliable redshift criteria for galaxies from the spectroscopic truth sample. Fig 3: [OII] signal-to-noise ratio and delta-chi-squared data points for galaxies from the spectroscopic truth sample. Fig 4: Effective exposure time (in seconds) for the spectroscopic truth sample. Fig 5: Target density and net surface density yield (both in units of #/deg^2), redshift range success rate (rate at which we get reliable redshifts within 1.1 < z < 1.6), and different g-fiber limiting magnitudes. Fig 6: Colors from HSC wide and spectroscopic redshifts for objects passing reliable redshift criteria using objects from the spectroscopic truth sample. Fig 7: Completeness of our optimized selection and spectroscopic redshift bin centers. Fig 8: Colors from HSC wide and LePHARE photometric redshifts for objects not passing reliable redshift criteria. Fig 9: Target density of DESI LOP elgs (weightedavg), our optimized spectroscopic truth sample (normhist_truth), and a second optimized sample using shallower photometry (normhist_noisy) in units of #/deg^2 . This also contains their spectroscopic redshift bin centers. Fig 10: 2D histogram values of the fraction of galaxies passing Random Forest Classifier (RF) probability of being within 1.1 < z < 1.6 for different colors using photometry from COSMOS2020. This contains the fraction of galaxies passing the RF probability cut before and after color cuts are applied. Fig 11: Effective exposure time (in seconds) for the DESI pilot sample. Fig 12: Colors from HSC wide and with spectroscopic redshifts for objects passing reliable redshift criteria using objects from the DESI pilot sample. Fig 13: Target density of DESI LOP elgs (weightedavg), the DESI pilot sample (normhist_pilot), and the spectroscopic truth (normhist_truth) in units of #/deg^2 . This also contains their spectroscopic redshift bin centers. Fig 14 clean phot: Colors from HSC wide (non-degraded) and spectroscopic redshifts for objects passing reliable redshift criteria and optimized selection cuts using objects from the spectroscopic truth sample Fig 14 clean noisy: Colors from HSC wide (degraded) and spectroscopic redshifts for objects passing reliable redshift criteria and new optimized selction cuts (based on noisy photometry) using objects from the spectroscopic truth sample Fig 15 cosmo photoz: Spectroscopic redshifts and LePHARE many-band photometric redshifts for objects from the spectroscopic truth sample cross-matched with COSMOS2020 that have reliable spectroscopic redshifts Fig 15 hsc photoz: Spectroscopic redshifts and grizy photometric redshifts for objects from the spectroscopic truth sample cross-matched with HSC DR3 that have reliable spectroscopic redshifts