When trying to "like" posts these past few days I've been scoring around 60% ARG:4, 20% ARG:6 and 20% IMH.
I’m not sure what my rate is for this, but I’ve had a recent surge of this popping up when I use the feature. Sometimes I meddle around by liking and unliking and liking again just to see if the displayed outcome changes — and sometimes it does change.
To be the first to Like a post seems to work fine more than when I’m the second third or later to like the post.