Edit (13/03/2021): NEW UPDATED VIDEO WITH 20 YUMIKO COMBOS:
Bow
1: Not true anymore.
2: Dsig Nlight/Recovery
Hammer
1: Dsig Jump Sair/Nair/Recovery (I recommend nair or recovery over sair now since the knockback angle changed)
2: Not true anymore.
3: Throw Dlight Pickup Nsig Sair (Still true but has to be done a different way, video example here: