Welcome to the Q&A Forum

Buzzsumo might be able to help with that too. How helpful it turns out to be will depend on how specific your search topic is. Buzzsumo will allow you to enter in a search topic or domain, filter by publication type (article, infographic, guest post and so on), and then sort by the number of twitter shares. Because you're looking to identify top brand/athlete/celebrity shares, and because they tend to have a boat-load of followers, they're likely going to rise to the top after your sort. Eyeball the results and and see if any pop out.