Speaking of 5-on-5 TOI% QoC (playoffs):
Morrissey 29.76
Trouba 29.62
Byfuglien 29.26
Enström 29.22
Morrow 29.14
Myers 28.64
Chiarot 28.41
Kukikov 27.49
Poolman 27.28
As a fun fact, Poolman had the lowest TOI% QoC among all NHL D-men on playoffs, Kulikov was the 3rd.
Morrissey was facing only only 26th best competition as a D in playoffs, Trouba 31th.
It's a stretch to call Buff to be sheltered, if anything his QoC is roughly equal to the first line, just a bit under that.
Regular season:
Morrissey 29.42
Trouba 29.39
Enström 29.13
Byfuglien 29.10
Myers 28.64
Morrow 28.61
Kulikov 28.31
Chiarot 28.07
Poolman 27.76
Niku 27.36
Looking at just those that played regularly, Jets D deployment looks more even than on many other teams. Buff is not sheltered according to these. Myers is slightly sheltered, and just as expected, those young guys are substantially sheltered. Kulikov situation is odd, though. Maybe due to his injuries?
Until they let Maurice to decide how the opposite team is deployed, you can shelter only so much.