Word for different office/work "cultures"

A fairly recent buzzword that would work well for this situation is wheelhouse:

We will see a big difference in the type of pictures submitted between the two offices because of their different wheelhouses.

This is an extension of the idiom:

in someone's wheelhouse

(US, idiomatic) Matching a person's interests or abilities well.

(Wiktionary)

It's a bit more flexible than some more formal options, and encompasses both skill sets and inclinations. Examples of this extended usage:

While these three artists come from very different wheelhouses, they share a knack for storytelling and an ear for melody. (The Bulletin, comparing musicians from various genres)

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ARE YOU A BETTER WRITER THAN YOUR PARENTS? ;) HAHA DO THEY MAKE YOU PROOFREAD FOR THEM?

My parents are in computer science and medicine so our jobs are in completely different wheelhouses. (Aemilia Madden chat transcript)

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In Elementary, Joan and Sherlock have this very interesting dynamic; they have very different wheelhouses, but they’re equals and Joan is one of the few people that really keeps up with Sherlock. (Blog)

For a discussion of the phrase's origins, see this Chicago Tribune article.

Some similar, more traditional terms might be line, sphere, or bailiwick.