RGB HST images reported in Table E.1 are shown on two columns (divided by the vertical blue bar). The least magnified image of source 1 is shown on the top-left (1a), and the most magnified (1c) in the adjacent cutout on the right. The same applies for the other images. The size of the cutouts is 6″ × 5″. The ASTRODEEP identifier is quoted in red, while our internal ID is in white. For source 20 (bottom-left), two clumps are reported: 20.3a, 20.3c (marked with white segments), and 20.1a, 20.1c (cyan segments).