We saw Google testing a new ad carousel on mobile named "people also search for" and now we see Google testing this on the desktop results. Leann Pickard posted a screen shot of this on Twitter showing this Google Ads interface under a search result snippets.
Here is that screen shot (click to enlarge):
First time seeing these carousel ads in SERP results: pic.twitter.com/G6YmYhVVya
— Captain Pickard (@leannpickard) June 23, 2020
She has the Twitter name and I think last name in general.
Forum discussion at Twitter.