Here's a fun one. On crouching...
6B > 5C > 6C > 2D > 6C > Dash > 5C > sj.C > 214D - 3912 damage
The second 6C and following 5C have to be done low to the ground. Most of the time, they'll fly across the screen, but some will stay in the same corner, so you can tack on some damage. If you manage to end with 2C > 623B > 623A, it gets 4514 damage. Won't work on Carl. Harder on some characters than others.
Then again it's easier to connect with...
6B > 5C > 6C > Dash > 5C > sj.B > j.C > j.C > j.D > 214D > 2C > 623B > 623A
which does 4131 damage.
Since I'm dealing with impracticalities anyway, here's another.
CH 236A > 2D > 66C > Dash > 5C > sj.B > j.C > j.C > 214D > 2C > 623B > 623A
Does 5318 damage.
Edit: Here's a throw combo that works on Noel, Ragna and I think 2 other people, who I'm forgetting.
Back Throw > 214A > 5C > 6C > Dash > 5C > sj.B > j.C > j.B > j.C
Does a little over 3.2K and builds 25% heat. The lack of a knockdown sucks, but the damage and heat are good, for a throw.
Re-edit: Looking back through the pages, a couple of these might have been posted in some form. I'll leave them, since they have numbers attatched to them.
Here's another. Mid-screen.
Back Throw > 214A > 5C > 2C > 6C > Dash > 623A - 2821 damage, 22 heat
Won't work on Carl. Practicing this one with the opponent teching forward, I noticed you can do a 236C that's completely undetectable, until the opponent is on top of it, though I doubt someone's just going to fall into it. Can't tell how safe it is, but there might be some use for it.
Variation for the Ragna, Noel, Arakune, ?? combo.
Back Throw > 214A > 5C > 6C > Dash > 5C > 623B - 2889 damage, 22 heat
Don't like this one too much. It does less damage than the other character specific combo and leaves you in a slightly worse position than the combo above it. Unless you do it in a spot where you can land a 623A afterward, I wouldn't use it.