Disclaimer: I am a total noob at this.
I can't figure out how to get WP to organize our People Categories the way we'd like. We have around 150 people in total but we'd like to split these up into two different categories. After designating each person in the appropriate category, there are multiple pages that need to be clicked through for both categories. Instead we'd want just one page per category. Any advice on how to do that?
You create a parent Category People. Then, you create two subcategories: People > Sub 1 and People > Sub 2. Then, you create an archive layout for a subcategory page with posts being populated with archive content (people belonging to a subcategory). It also depends what theme are you using to create your templates. This is how I would approach the problem.
How is your site built? Page builder? Block theme? etc? Need more info. Then I can better advise you.