Thought I'd share some for Kasumi
works for generally everyone and is probably her easiest go to wall splat combo. Use the SSS4S tho if you want to keep a full meter and against heavies since the break blow won't always connect vs heavies. It's useful from most of her wallsplats that don't have enders with steep recovery frames.
~Attacks like H+KK, 9K, K from Hoshinpo, etc.~
°33P>H+K(Backturned)6~KK is a go to for lights from 9K and H+KK near walls. For mids and heavies you'd use PKKK or SSSS(Max damage against mids and heavies). 6KK is also good for easy damage if you want to save your 30 hit combo limit for danger zone set ups for more lengthy combos.
°I think this is light and mid exclusive but Kasumi can also freestep to either of the sides so she can get an easy KK7K•P into a close hit 236P. It's not AS strong as say SSSS but it has better damage potential in the right stages, especially if you have meter like in Throwdown.
Kasumi has a pretty flexible wallsplat game so you can pretty much do any of those from any attacks that aren't steep in recovery.
°For slower recovery attacks like 3P+KKK with like 40i recovery you can PP6P6K on everyone but PKKK is the best option although it can be strict to land on heavies.
°If you want to go for some Okizeme or Force tech you can use PP2K or 1K after just about all her hard wall splats minus steep recovery ones like 3P+KKK.
For her close hit attacks, SSSS is the best option after a 3P+KP at the wall, especially with close hit. For 236P you can use PKKK against everyone or SSSS but it's stricter to land in certain situations unless you're at a angle.
Her wall game imo is already good but Kasumi's soft wall splat game is where she shines best imo since her options and damage output are one of the best when you use the stage hazards xD