How to approach chest rotation before character rotates?


I’m working (learning?) on a top-down game. I’m doing fairly fine but I want to improve my animation fidelity. Mostly things like transitions and some secondary movement.

Normally my characters move using WASD and they turn towards the movement direction. However, when I press and hold Right Mouse Button, my character starts looking towards the mouse cursor while WSAD allows to strafe.

What I want to improve is the rotation visuals. What topic/tool/idea is usually used to achieve things like rotating pawns chest before he moves their feet?

Sort of what you can see here Character Movement [Prismatica DevLog #01] - YouTube.
I tried to take a look at ALS to see how it’s done there. Is it being done with additive animations?