Cloud vs Luma

Here is a list of Cloud's attacks and when they're able to break the knockback threshold for Luma (max HP for Luma is 50 HP).  Didn't include throw hitboxes as I'm honestly not sure how they would interact with the Luma.

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Jab 1: Never knocks Luma

Jab 2: Never knocks Luma

Jab 3: Knocks Luma at 50  HP

Dash Attack: Knocks Luma at 50 HP

FTilt: Knocks Luma at 29 HP

UTilt: Knocks Luma at 50 HP

DTilt: Knocks Luma at 50 HP

FSmash: Knocks Luma at 50 HP

USmash: Knocks Luma at 50 HP

DSmash: Back hit knocks Luma at 46 HP

NAir: Knocks Luma at 20 HP

FAir: 14% hitbox knocks grounded Luma at 41 HP, 14% hitbox knocks aerial Luma at 35 HP, 13% hitbox knocks Luma at 37 HP, 11% hitbox knocks Luma at 29 HP

BAir: Knocks Luma at 34 HP

UAir: 12% hitbox knocks Luma at 47 HP, 8.5% hitbox knocks Luma at 33 HP

DAir: 15% hitbox knocks aerial Luma at 36 HP, 13% hitbox knocks Luma at 49 HP (max HP if fresh), 8% hitbox knocks Luma at 50 HP

Blade Beam: Never knocks Luma

Limit Blade Beam: Knocks Luma at 50 HP

Cross Slash: Final hit knocks Luma at 39 HP

Limit Cross Slash: Knocks Luma at 50 HP

Climhazzard: Launches Luma at 40 HP, landing hit knocks Luma away at 50 HP

Limit Climhazzard: Launches Luma at 50 HP, landing hit knocks Luma away at 50 HP

Finishing Touch: Launches Luma at 50 HP

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What can we draw from this?

1) Cloud's jab 3 and dash attack are his best (and only really practical) moves  for knocking the Luma away horizontally.  However both are unsafe on block and can be easily punished out of shield by Rosa with moves like grab or USmash.  Dash attack, however, sends the Luma very far due to its absurdly high BKB.

2) Cloud's main horizontal hitting aerials are not particularly effective at knocking the Luma away.  NAir in particular being the worst of the bunch.  The Luma will need a decent amount of prior damage in order to get rid of it effectively.

3) Cloud has a good handful of relatively practical moves to knock Luma upwards such as UTilt, DTilt, late DAir and UAir (once you've tacked on some prior damage).  Consequently an effective strategy vs the Luma would be to launch it with one of said moves, then relentlessly juggle it with UAir until you can knock it away with BAir.  This allows you to remain mobile and safe provided you place your moves correctly and not predictably.

4) All of the Limit specials can swiftly eradicate the Luma, but of course this means expending Limit and it's a lot easier for Rosa to get another Luma than for Cloud to get Limit as it requires zero effort on the Rosa's part (simply a waiting game).  Furthermore, Limit Blade Beam can be completely nullified by Gravitational Pull.