All clutch stats (however you define clutch) are pretty much variance and noise. One year's clutch leaders has almost no correlation to the next.
"Clutch" does exist. One team is trying to slow it down, the other to speed it up. Lots of fouling, both teams possibly in the penalty etc.
Evaluating those moments by points scored or percentages just tells you 1) which team has been in most game situations defined as clutch 2) whose usage rates are the highest.
Trying to give Lauri the ball in static situations is a bad play, pretty much always. He's not that type of "clutch", at all. Giving him the ball on the move or catch & shoots when down or tied is a wonderful play and he's extremely "clutch" then. The team just need to recognize those situations better - and possibly get some plays that work for Lauri even when Keyonte has just dribbled the shot clock down to <10 sec. And if Hardy solves that, then Keyonte will be clutch as well, because he can drive and c&s pretty clutch also.
And then we just need some much more reliable corner 3 shooters.