Shielding on ARC and weapon ammo types

So raiders have shield technologies of various strengths that can be recharged using ARC components/power units to assemble rechargers.

Am I correct in that we haven’t seen any ARC enemies with shielding? I can foresee a whole advanced class of ARC enemies with shielding that makes them heavily resistant to physical projections and infer the expanded need of non-physical projectile munitions such as the Queen primary and Equalizer weapon (energy) and potentially other ammo types yet to be revealed (plasma, lightning, incendiary). Though I know we’ve seen a glimpse of a Jerry-rigged small flame thrower.

What are your thoughts and predictions?