S grinds are more for ease of cutting, helping go through tall dense product easier by reducing friction. Some happen to offer food release advantage as well.
Bazes forged hollows offer good food release IME. A Marko s grind offered no advantage. Also I'm convinced surface finish plays a roll.
If you want true food release, some grinds are geared specifically for this. Hook grinds, bump grinds and B grinds do very well. From what I see of majime, a machined feather grind also does well.