Only invite people who can actually create the meeting's output, whether that's ideas, approvals, or designs. Define what you need first, then build your guest list around who can deliver it. Everyone else wastes time.
Chapters
How to have a great meeting. Tip number 3: only invite people who will contribute to the output. The purpose of a meeting is to produce something. It might be ideas, it might be approval, might be designing a particular document, reviewing something. Whatever it is, you're going to have a specific output, and the people in the meeting should be contributing to that output. If you don't do this, you're going to invite people who might not contribute or add value or even get value from the meeting. So when you're creating your list of meeting invites, think about the output you want and only invite people who are going to contribute to the creation and delivery of the output you want.