If timed correctly, 22c hits meaty, and you have time to land, dash in, IAD and hit them into IAD mixup without them ever exiting blockstun. There is absolutely no way to get 5A'd out of this.
With the same timing, 22b gives you meaty, and you can land, dash in, IAD j.A, which will hit Koha and Mech out of their 5As, so I assume it will hit everyone. If you just dash in 2A, it will hit them before they exit blockstun.
236a/c is a good option for oki, but I can not agree that it is safer. Because you are closer, you can get hit by heat/dp if you go for the throw, and the orb disappears, so they will go unpunished.