I think a vindicator has more of a "snout" though. less faceplate, more helmet.
Trebs or Whits are reasonable choices, except that left arm has a fist, which a whit lacks, and the treb usually has rockets on the arms.
Honestly, the Victor seems the closest suggestion we currently have. It's mostly that faceplate, arm, and left srm4 launcher in the chest that makes it look like that though.