Portraiture is more than "this is John" it's about giving your audience someone to connect to.
There is a lot about your business that is unique, so you can't count on stock photography for everything. In fact, you should have some of YOUR stock photography for all web, social, and creative design.
Ok - this is a catch all. Because there is no way we could list all the different styles of photography. Sometimes you just need that "off the wall, upside down, and kinda crazy" eye to capture your brand.
Architects care a lot about the details. If you're an architect, make sure your photography pays close attention to everything you spent your time designing.
There are so many different styles of interior design and just as many styles of photography.
If your business produces goods or hardware, make sure you have amazing product photos!