Google seems to have fully rolled out data overlays on top of the knowledge panel cards for both the main card and the sub-cards for the people also search for section. This not only shows you data answering your specific query but also shows you the same data point for other people related to that query.

Hat tip to Khushal Bherwani who posted about this on X – I can replicate it, so it seems to be fully rolling out.

Here is a mobile screenshot:

Here is a desktop screenshot:

Here are more screenshots:

🆕 Google seep rich card gets more interactive.

↗️ Snowing related topics cards as carousal.

↗️ Not saw this before, and it seems to me that its fully rolled out. pic.twitter.com/hfbqEVa9to

— Khushal Bherwani (@b4k_khushal) October 22, 2023

And similar:

This cards kind of Ul in SERPS seems NEW
Because I have never seen this before pic.twitter.com/uGjQXIQcIM

— Gagan Ghotra (@gaganghotra_) October 21, 2023

Forum discussion at X.