I suppose WHM has no option in cross-class actions.
THM: Surecast, Blizzard II, Swiftcast
ACN: Virus, Eye for an Eye
When soloing I relace Eye for an Eye with Ruin to save MP, though I rarely use it.

Undoubtedly WHM is stronger than CNJ in endgame, but CNJ has advantages in cross-class actions. I prefer playing CNJ in low-level (up to Lv30) dungeons because useful WHM actions are unavailable.

After unlocking all cross-class actions for CNJ, I finally got 30 buffs in solo.