3 One could use globes, or other fixtures with little or no control of the light output. Marginal lighting for the task, and a great deal of waste. 5 One could use a fixture with some control of the light output. Certainly much better than the first choice. 6 Better, but still a good deal of waste, and the glare level is probably too high for comfort.
Glare never helps visibility.
A full cutoff lighting fixture, one with no direct uplight at all, and with essentially no glare. All the light is used, none is wasted. No adverse effects of bad lighting. Note the added light near the entrances. The risk there is greater than on the path, and so a lower lighting level is appropriate for the path way.