UE4 Skeleton with multiple meshes (characters) which can use a single set of facial morph targets or facial skeleton

Is there a way a single skeleton (the UE4 mannequin skl (or a modified version)) which will be used by multiple characters can use (the same) facial morph targets or a face skeleton to allow for facial animation through characters that use a single skeleton?

I know that there are no face morph targets on the base ue4 skeleton, but my main goal is:

  1. keeping a single common skeleton for multiple biped humanoid characters
  2. Adding in face animation capabilities that can be used by any of these characters

However how could this be accomplished when each character could potentially need different face morph targets/ face rig?

Would I need to separate the head from the rest of the body (which could cause a whole new slew of issues)?