Sorry I had missed this before, but some other oki options that are good are:
3C -> 214D: This can be used for unblockables as long as the opponent does not delay tech.
3C -> 214C: Should catch delay/roll techs and leads to very good damage on hit. The last hit of 214C should also connect with the opponent if they neutral tech, allowing you to safely go into pressure.
3C -> jD -> airdash jB -> jC: Overhead option that can be used to catch the opponent off guard as long as they don't forward tech.
The safest option is still 3C -> jD -> jC, since the jC will catch a delay tech or roll while still keeping you safe from reversals if they neutral tech (you will recover from jC before they can reversal you). Just because it's the safest option, however, doesn't mean it should be the only one you use, since the others generally lead to a bigger reward.