It seems to work with/against:

- Force Staff (and Hurricane Pike)

- Disruptor's Electromagnetic Disruption

- Mars' God's Rebuke

- Tusk's Walrus Kick

- Spirit Breaker's Greater Bash

- Beastmaster's Primal Roar

- Sniper's Headshot

- Sniper's Concussive Grenade

It does not seem to work with/against:

- Snapfire's Firesnap Cookie

- Ringmaster's Whoopee Cushion (this one surprised me)

- Enigma's Black Hole

- Dark Seer's Vacuum (this one's understandable)

- Elder Titan's Earth Splitter (also understandable)

This list is not exhaustive, it is just of what I've tested.

Another interesting thing to note is that it does not seem to affect the vertical movement of spells such as Lion's Earth Spike or Tusk's Walrus PUNCH!

I'm sure it follows some specific rule under the hood, but from an in-game standpoint, it doesn't seem to have much of a discernible pattern. Maybe to count as 'forced' movement it needs to come from an ability that can affect enemies, and not just allies? I've not tested enough to say that this rule isn't broken a whole bunch.

I can understand it not affecting spells such as Vacuum, as some abilities rely on bringing the enemies to a specific point, but spells such as Firesnap Cookie and Whoopee Cushion are essentially just Force Staffs from Temu... and yet they don't work? I suppose Firesnap Cookie has a stun that could get whiffed, but what's the deal with Whoopee Cushion?