I didn't see him initially then included him. He's still bowled half the overs and Shaheen has bowled more innings which is probably a better metric if you are looking at the frequency of which a bowler has to put themselves through it. In that instance only Southee has bowled in more innings than Shaheen.
The innings bowled is a crucial metric IMO. There’s a big difference between constantly bowling in multiple T20 games at full tilt over an average workload in a test match.