Here are some practical non-character-specific combos for H-Ryougi that I've found.
Anywhere on ScreenStandard BnB:2a, 5bb, 2b, 5c, 2c, 22a, 2c, 3c, 5c, 5bb, j.bc, dj.bc, 236b
(5023 damage to V.Sion)For when you don’t know what else to do.
From Full-screen to Mid-ScreenHigh Damage + Knife Pickup:2a, 5bb, 2b, 5c, 2c, 22a, 2c, 3c, 623b, 2c, 3c, 5c, 5bb, j.bc, sdj.abc, 236b
(5,245 damage to V.Sion)If you did the super double jump, you should land right on the knife after j.236b
Knife Pickup + Oki:2a, 5bb, 2b, 5c, 2c, 22a, 2c, 3c, 623b, 2c, 3c, 623a
(4,462 damage to V.Sion)Should put you right on the knife, with just enough time to pick it up and IAD j.c at them on wakeup.
From Mid-ScreenHigh Damage + Knife Pickup:2a, 5bb, 2b, 5c, 2c, 22a, 3c, 623b, 2c, 3c, 5c, 5bb, j.bc, dj.bc, 236b
(5,035 damage to V.Sion)If you're too far into the corner you might accidentally cross up with 2c. Should land you on the knife.
High Damage + Knife Pickup (alternate):2a, 5bb, 2b, 3c, 623b, 2c, 3c, 22a, 2c, 3c, 623b, 2c, 3c, 5c, 5bb, j.bc, sdj.abc, 236b
(5,143 damage to V.Sion)If you did the super double jump, you should land right on the knife after j.236b
Knife Pickup + Oki:2a, 5bb, 2b, 3c, 623b, 2c, 3c, 22a, 2c, 3c, 623b, 2c, 3c, 623a
(4,588 damage to V.Sion)Should put you right on the knife, with just enough time to pick it up and IAD j.c at them on wakeup
In the CornerHigh Damage + Knife Catch:2a, 5bb, 2b, 5c, 2c, TK236b, 5bb, 214a, 22a, j.c, AD(catch), c, dj.abc, 236b
(5,176 damage to V.Sion)The knife catch cancels your air dash so you can hit the second j.c.
Knife Pickup + Oki:2a, 5bb, 2b, 5c, 2c, 22a, 3c, 5bb, 214a, 3c, 236a, 236a, 214a
(4,556 damage to V.Sion)Use 214a instead of 236a at the end because you'll be on the other side of them. Lands you right on the knife.
Knife Pickup + Oki (alternate):2a, 5bb, 2b, 5c, 2c, 22a, 3c, 5bb, 214a, 2c, 22a
(4,050 damage to V.Sion)Cancels the untechable 2c with knife pickup. This version keeps them in the corner. Follow up with the slow-ass dash 6a+b roll crossup for the lulz.
High Damage + Knife Pickup + Oki: 2a, 5bb, 2b, 5c, 2c, TK236b, 5bb, 214a, 2c, (delay), 5c, 22a, 2c, 3c, 623b, 236a, 236a, 236a
(5,503 damage to V.Sion) Nice damage, keeps them in the corner, gives you time to pick up the knife and still have advantage on oki.