Summary of our spectroscopic results showing one spectrum (grey line in each panel) for each source class identified in our target lists. From top to bottom: z​ ∼ ​2.2 QSO, z​ ∼ ​1.5 QSO, star, z​ ∼ ​0.5 galaxy, and Lyβ-emitting QSO. The corresponding J-PLUS photometry is shown as coloured squares. The star and galaxy targets show low-significance excesses in J0395 NB (third square from the left). Indeed, these interlopers were selected as targets by the first version of our methodology, i.e. before applying the improvements due to CTG2018A results and the re-calibration of J-PLUS data (López-Sanjuan et al. 2019a).