Checkmarks aka check marks aka ticks aka tickmarks. The symbol used to indicate acceptance, correctness or approval.
Seems pretty versatile. Can do stand alone checkmarks, spoken checkmarks, checkmark eyes, checkmark logos and even checkmark censors. It also seems to have picked up the cross/X mark as well which it associates with "red checkmark".
It can cause issues with pupils, and upscaling faces has had more issues than normal.