Ryan Maloney shows how to nest character parts inside a single symbol in Adobe Animate. Put the head, sunglasses, mouth, and audio track together, animate the mouth once, then move the whole head around the stage without redoing the animation or managing dozens of layers.
When you're setting up your characters in Adobe Animate, I like to nest the files. That means I have an object here like the Hanson singer's head, and then when I double-click in that, I have all the pieces of the head, the sunglasses, the mouth, and I even put the audio track within that. So I can animate the mouth within this piece and then jump back out here and I can move the head around and the mouth will be animating, but I won't have to animate it on two different layers. I'll only have to animate it once, and then I can shift this around as much as I need to, and the mouth will always stay with that character head and be lip-syncing with that head.