For Ethereal it seems that the uppercut seems to be a better ender (in most cases) than the B22 1+3.
F343 xx TK xx air sai, F2 xx Roll, Uppercut (37% - no meter)
F343 xx TK xx air sai, F2 xx Roll, B22 1+3(36% - no meter)
F343 xx TK xx air sai, Roll, Uppercut
F343 xx TK xx air sai, Roll, B22 1+3 (34% - no meter)
F12B4 xx EX TK xx air sai, F23 xx Roll, Uppercut (35% - 1 meter)
F12B4 xx EX TK xx air sai, F23 xx Roll, B22 1+3 (35% - 1 meter)
F344 xx Roll, NJ2, Uppercutter (34% - no meter)
F344 xx Roll, NJ2, B22 1+3 (33% - no meter)
F343 xx Roll, NJ2, B22 1+3(31% - no meter)
F343 xx Roll, NJ2, B22 1+3(30% - no meter)
(I will go through the combos that have been listed for Ravenous and convert them to Ethereal like this, so this isn't a final product
)