Four simulated Euclid catalogs used in this work (solid purple line, EWS; dashed orange line, C16; solid gray line, C25; dashed-dotted blue line, EDF) shown as the number of sources as a function of the EuclidH_E band magnitude (leftmost panel), redshift (center left), stellar mass (center right), and star formation rate (rightmost panel). We notice that the magnitude cut upon which the fields are built is an OR condition on the S/N in H_E, I_E filters; as such, simulated galaxies are found below the nominal limiting magnitude cut for H_E band, as those are detected at S/N > 10 in I_E.