What "good staggers" do you mean?
Only stagger I found so far was B231 (U2) if the opponent tries to flawless block but the recovery is still too much to recognize the stagger.
Other strings are hitconfirm or end your turn with safe on block but did not see the stagger opportunity. There are not really follow ups which would respect the opponent to make the stagger effective.
Or I miss the point, yet.
EDIT:
B2 is 0 on block with "okayish" recovery so B2 looks viable.
And S1 even if its -4 but 12U2 is respectable and fast recovery. But that's just simple staggers for everyone though.
B14 - B142. To mess up with your opponent counter planning a bit.
So there are few of them which but you will not pressure your opponent all day with that.