I think people are getting confused because there's 2 different shots that get the same result.
1. You hit near center, but not firm, the cue ball slides a bit and then friction takes over
and it starts to roll. The cue ball rolls forward maybe a ball's width after contact.
This is just a soft rolling shot with no special name that I'm aware of.
2. You pop the cue ball firmly, very close to center ball, but hitting 1 or 2 mm higher
than dead center. It looks just like a stop shot, but then the cue ball does a little turn
afterwards. That's a stun through or stun run-through.
Stun follow is when you want something that's more or less follow, but you want the cue ball
to glance sideways a bit along the tangent line, before it rolls forward.
This is useful for example when you're too straight on a ball, but still have a tiny bit of angle.
This is achieved by hitting a little closer to center on the cue ball, which makes less violent
forward spin even when you hit the ball firmly.
I guess the stun-through could also be called stun follow, but stun-through is more exact
because it describes that "ball-replacement shot" we all love/hate.
Force follow is a generic term for when you're hitting with full topspin (not close to center
like the previous shot) and also hard enough that the cue ball is spinning faster
than it would from natural forward roll. Like a tire peeling out on asphalt.
Stun-throughs are a tough shot to master, I'm still scared every time I try it. Hitting exact
center ball is tough unless you've trained your bridge hand to go to that center-ball height
automatically. There's a great drill for it though:
Line up all 15 balls in a row between the side pockets.
Take the cue ball anywhere you want behind the line (you can move it on every shot).
Set up a straight in shot on each of these balls, and try to stun through them
1 ball width. If you miss, reset the missed ball and try again until you get all 15.
Then set them up again, and try to stun forward 2 ball widths.
For me, the trick is to focus on the speed. Get the bridge a tiny bit higher than center,
and imagine the speed you'll need to get that stun through.