Google seems to be testing displaying both large and smaller image thumbnails within a single snippet in the mobile search results. This does not surprise me and it actually looks pretty good. I cannot replicate this but here is a screen shot from Menucha Zimmerman.
She shared this on Twitter:
This came up for a mobile search on [elon musk] but she was able to see it for searches on [impeachment] and [lauren boebert]. Again, I cannot replicate this but let's add this to the bag of Google interface tests.
Forum discussion at Twitter.