Only one place I have worked at had the goal of writing code as if it were from just one person and it was pretty nice, honestly. The diff tool output was easy

Only one place I have worked at had the goal of writing code as if it were from just one person and it was pretty nice, honestly. The diff tool output was easy to understand (not a lot of noise). What made it work was everyone was pretty mature and understood that this was a group effort, and not everyone was going to get their personal itch scratched around brace style, etc. We did have some outside contractors who didn't get it at first, but after several of their submissions were rejected (with potential financial penalties) they got onboard and followed the guidelines we had sent them. "These people mean it."