How much of the classification in Figure 15-24 do humans share with the leopard?

To accurately answer your question regarding the classification in Figure 15-24 and the extent to which humans share it with leopards, I would need to see the specific figure you are referencing. However, generally speaking, humans and leopards both belong to the class Mammalia and share higher taxonomic categories, such as the order Carnivora in the case of leopards and order Primates for humans. Despite these shared classifications at higher taxonomic levels, the details vary significantly at lower levels, such as family and genus.