In a small team, or an aware team, where AI is being used all the time and we are figuring out the best way to do it, i often just preface my messages with

  - "from my ai to yours" where ive pointed my ai at some relevant context, and asked it to transform it for other ai context that a coworker needs
  - "my thoughts prettied by AI" where i just polished up my own words, often for outside coms, but indicating that i wrote the bones of it.
  - "i wrote this myself" in my case i tend to be very casual with my written coms, and ive been leaning into this in the past year rather than looking to correct it, as it gives the personal feel. but for cases where ive written more thoughtfully, i just flat out say that.

Helps my team is small. interested in how this could be translated to more widespread "company culture"

It’s in the same spirit of citing your sources in academic writing.

Indicating what you’re taking from a prior source and which parts are your individual contributions.