Six enlarging lenses at 4.28X in a stacked setup:
Nikon EL-Nikkor 150mm f/5.6 A Enlarger Lens
Rodenstock Rodagon 150mm f/5.6 Enlarger Lens
Schneider Kreuznach Componon 150mm f/5.6 Enlarger Lens
Schneider Kreuznach Componon-S 150mm f/5.6 Enlarger Lens
Schneider Kreuznach Comparon 150mm f5.6 Enlarger Lens
Schneider Kreuznach G-Claron 150mm f/9 Reproduction Lens
The full test online now, here on Closeuphotography.com: