Alex Len is 1st in Offensive Rebound %, 3rd in Defensive Rebound %, and 2nd in overall Rebound %.
Troy Daniels is 5th in TS% at 77.3% and 19th in EFG% at 71.7%.
Len and Monroe are 4th and 5th in Player Impact Estimate at 19.7. I'm not familiar with that stat but the only players ahead of them are Russell Westbrook, Clint Capela, and Kevin Durant. If Capela wasn't listed I think that would be more impressive but it shows how valuable they have been, especially Len considering he played in 5 games compared to Monroe's 2. DeAndre Jordan, Anthony Davis, DeMar DeRozan, Joel Embiid, and Bobby Portis round out the top 10 in that stat category.
Here is the
definition for PIE...
PIE measures a player's overall statistical contribution against the total statistics in games they play in. PIE yields results which are comparable to other advanced statistics (e.g. PER) using a simple formula.
You can click the
hyperlink above for the formula for PIE.