Wargames Atlantic have recently released a box of thirty 28mm lightly armed and armoured troops labelled as Cannon Fodder.
They are sculpted to be suitable as Imperial Guard, Colonial Marines, Penal troops (bareheaded with explosive collars) or anyone else who is dressed in a boiler suit/coverall.There are four different head types (helmet, kepi, hostile environment and bare head with collar)
Cannon Fodder compared to Spacegrave Trooper.
And because it is a contractual obligation, compared with William Killian.