The jump in chicken is more of an anti-parry or anti-throw tactic. Because Oro freezes in the air for a bit, the opponent gets confused and tries to parry (expecting a normal attack) or throw (expecting an empty jump throw) too early.
I don’t recommend c.mk into command grab because it can’t be confirmed unless you connected a jump attack. If the opponent blocks the command grab, you’ll eat anything from a sweep to a 50% combo for free.
Jump in air chicken, 2-hit launch xx Yagyou is a great unblockable setup because you use up 5 juggle points (1+1+3) before activating the Yagyou. This means that the Yagyou will only hit once, making the opponent unable to quickstand and giving you 3 hits left to guardbreak with.