I'm getting great originality results if the content is written in PR Mirror style but less so for other styles. Open question for anyone with a view on it and I appreciate not everyone is interested in passing AI tests but... What do you think it might be about that particular style and are there others that also tend to be more 'human'?

Yes - so many styles to play with and so endless combo's too. I've been finding mixed results with the extra prompts for removing em dashes and Oxford commas and style clearly plays a huge part in high originality score. Certainly fun to experiment with. Will try the Ogilvy style next I think!