I have used ChatGPT output on two pre-approved (new version) Google News sites and its content is being indexed and ranked within a couple of minutes on one site and a couple of hours on the other.
One article I posted today is already at position 1 (desktop & mobile) for a zero search item with the following metrics (see screen shot below) according to Keywords Everywhere.
This site stats wise, has a DA of about 30, a DR of 34 and authority score on Semrush of 32. when I hover over a URL on the Serps, Google says it was indexed over 10 years ago, and I have owned the site for the last two years.
In total I have added about 15 ChatGPT articles to the site in the past few days. they range in length from 1,200 - 3,000 words and are all indexed within minutes (max an hour) and about 1/3 of them are currently in positions 1 - 22 on Google. The site has about 90 articles in total on it, with an average length of about 1,700 words.
This is actually better than what I have been achieving on the site with manually created articles. I am focussing on purely informational articles such as 'how to xxxxxxxxxx' and the niche is lifestyle.
The other site I put an article on has no authority at all and the article still indexed within a couple of hours and is still indexed though it has dropped from around position 42 on the Serps when it was first indexed to about position 80.
This site covers international politics and the article was about the current war in Syria (about 2.5k words). it is competing with the UN, USA government, CNN, Washington Post, EU, Brookings Institute, BBC etc. I literally put it up as the ultimate test to see if it would get indexed at all.
In summary, I have found ChatGPT articles index and rank pretty much as anything else (if not better). I always get my sites into Google News just for the fast indexing, nothing else).
But they have not resulted in much additional traffic (yet) and whether these articles retain any position long term, get any traffic, or the website gets approved for Adsense, I really don't know
I will reply here again in a few days time if there is any change with indexing, position, or adsense approval (or not), until then, good luck all.