Here are all the new hunter pet looks that we've found in Patch 11.1. This page includes tameable looks that are brand new in this patch, and also those that aren't yet tameable but we think have potential as Hunter pets.
By default, unused appearances are hidden expandable pop-out sections.
Gnome, Goblin and Mechagnome hunters automatically know how to tame Mechanicals. Hunters of other races must acquire the skill from a Mecha-Bond Imprint Matrix, crafted by Engineers who have at least 1 skill point in Legion Engineering.
Model: Mechanical Devilsaurs
Unconfirmed or currently untameable appearances
So far, these looks have only been found on untameable creatures.