Just about everything you can imagine is covered by cards. In 1910 Wills produced a set on Aviation, only a couple of years after heavier than air machines had taken off. Cards have been considered the encyclopedia of the common man during the period of issue. Any number of cards were produced on the sports theme. Cards devoted to film stars began as early as 1913.
History is covered both by default and determination.
Afterall the cards were issued in huge numbers depicting war heroes of every hue. And any number of cards devoted to the truly strange My only advice could be is to just take a few minutes to look at the price guide section and check out some of the subjects covered as described by the titles. The best way of getting to specific information is the site search engine. For general browsing the site map is functional. It lists every page I want you to see.