All of the bulleted lists are a strong indicator too. ChatGPT loves bulleted lists.
Also all of the leading sentence adverbs:
> Furthermore, ... (used six times)
> Finally, ... (used three times)
> Accordingly, ... (used three times)
> Overall, ... (used two times)
> Similarly, ... (used six times)
> In addition, ... (used five times)
> For example, ... (used 34 times)