A smooth, closed-back dynamic, hmmmm… Color me quite interested in trying Kennertons. They seem quite underground. Hidden treasures, even, perhaps 
From most to least detailed:
Focal Clear MG (Pro)
Hifiman HE-500
Hifiman Sundara
Sennheiser HD650 (600 + 58X as well)
Koss KPH30i
Smoothest of the bunch is the 650, not surprisingly. The detail is improved with the mods I have done (ZMF suede pads + copper mass mod from Custom Cans)
for IEMs:
Final Audio E5000
Hifiman RE-400
Moondrop Kato
JVC HA-FDX1
Those last three have too much upper midrange/lower treble for me, but otherwise have really nice smooth midrange and treble. I use EQ a lot though, so it’s not a problem.
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IEMs, hm, let’s sea…
DM8
EJ07
A7
AST
Tape Pro