Welcome to AC! I'm not really sure of the dimensions of a 38g...I would not keep less than 6 or 8 corys... but there are dwarf corys & you could probably keep more of them, they're tiny & cute!
So in all I have 2 silver dollars, 1 lace catfish, 2 giant danios, 2 angelfish, 1 kuhli loach, 1 golden dojo loach, 2 black skirt tetras, 2 white skirt tetras