Fastest clearing gladiator crucible build(s) with BiS?

Grim Dawn Gameplay Discussion
1

From what I know, the following classes are capable of clearing Gladiator Crucible on 1.0.0.6, and there are probably quite a few more that I’m not aware of:

Sorc
Warlock
Battlemage
Witchblade
Trickster

In your opinion, which build(s) when fully buffed and geared with BiS, would be able to consistently complete Gladiator Crucible the fastest?