not needed for "informational" uses -- for example, posting sports figures and their stats at a website. You would need permission for photos that are not in the public domain.
Can you stop others from copying your list? If it's just a list of names and heights, you probably can't stop others from copying. Facts such as height measurements are not protected under copyright ad compilations of facts may be protected if the choice and collection demonstrates substantial creativity. We can't say for sure whether your chart qualifies, but the Supreme Court has ruled that alphabetic listings don't merit protection so we doubt whether numeric charts qualify. Still, compilation protection is complicated and we could be wrong so you may as well include a copyright notice and pursue registration. Of course, you can always protect original graphic imagery included with your chart.