Not sure if anyone has found this but in s3 e2 when their defending kamino there is two mixers or two mixer helmet designs : r/clonewars
Mixer | Wookieepedia | Fandom
Star Wars | 501st Legion | Mixer | Phase 1 | Star wars helmet, Star wars trooper, Star wars clone wars
The 501st Legion - The dust has shaken off cloning facilities at Kamino and a new clone has joined the ranks: Mixer! Mixer was the nickname of a clone trooper who served
Clone Trooper 'Mixer' (custom figure) by MarcusStarkiller -- Fur Affinity [dot] net