Phil's plan is pretty clear. Long arms, athletic players.
Lopez - long arms, high motor.
Porzingis - long arms, good motor, very athletic for a 7'3.
Williams - very athletic, 7'1 wingspan
Thomas - athletic, looks like he has a long wingspan
Galloway - long arms, pretty athletic
Grant - long arms, athletic
O'Quinn - very long arms, good motor
That's 7 of our top 10 guys, most of which have been brought in the Phil Jackson era. If you look at it, it's mainly guys with either a high motor and/or athletic, with a very good wingspan for their position. It's very similar to what Gaines and he did to put together those Bulls teams When Phil was with the Lakers he also encouraged them to get guys like that - and had a high opinion of players like Bynum, Odom, Gasol, Ariza etc. because of their combination of athleticism/long arms.
So no surprise we scout guys like this. I think Phil/Gaines want players with a good motor, athletic and long arms. You see how with players like Galloway, Thomas and even Grant now, it helps even when you're looking at the lower level NBA players.