Business Language – Best Way to Say Something Was Done in Teamwork

"Stakeholders" has been a strong player in biz-speak since at least the early 2000s. It usually rates highly in any list of "business terms we love to hate." Which is problematic, because the word is very pertinent to corporate operations.

A stakeholder is an "interested party." It's a person who is at some level vested in the outcome of a particular project or proposal. A person with "skin in the game."

So your alternatives are words or phrases like, "interested party," "affected person," etc. A more targeted term like "team member" will not get the job done, because a stakeholder may not be directly involved with the mechanics of the issue in question, only the outcome or net result. Such a person could be termed a "downstream player."

"All parties involved" is a possibility, but I don't see this as much of an improvement. Like it or not, "stakeholder" is an elegant term inasmuch as it captures a wide, but specific, range of individuals.

I don't think you'd want to use the word brands here. A brand is a trade name, an idea, etc. Not an entity that trusts, feels, or otherwise has emotions. It engenders these ideas in people, but doesn't have them for itself.

You mean companies. And, you would say: Companies that trust our work.

Or even, simply:

Some of our clients: