Comparison of spectroscopic and photometric spectral types for the ‘cleaned’ GagnéM and GUCDS samples. The spectroscopic SpTs are obtained from the original catalogs, the Gagné dwarf archive and Smart et al. (2019), while the photometric SpTs have been computed using the polynomial relation with M_G from Reylé (2018). Objects with a flag indicating youth or uncertain spectroscopic SpT in the two catalogs have been omitted, as the M_G–SpT relation fron Reylé (2018) is valid for the main-sequence.