This should be universal for all of Nanaya's moons, but I will test in further detail later, as this list only currently applies to C-Nanaya. Basically, this is a list of what you can do after a well timed aircombo and airthrow versus certain characters, with both only one JBC and two JBC's for an aircombo listed. Obviously 1 JBC gives more meaty than 2, and obviously just letting them land after a 623C would give meaty regardless of the character.
This list assumes you don't Double Super Jump and don't Airdash after your aircombo. Both of these absolutely KILL the amount of meaty you get, so don't do it in MBAA!
Nanaya's Meaty Approximations [list currently disregards land 2B meaties, will be updated]
Off a Single JBC in the corner
No real options at all, turns into a Yomi game = Ryougi
No Meaty, but Anti Mash [On Point Dash 2A] = Miyako
No Meaty, but Anti-Mash [Decent Dash 2A] = Ciel, Sion, V.Sion, Roa, Mech, Kohaku, Hisui
Meaty [If done really low with a On Point dash 2A] = Tohno, Nanaya, Warakia, W.Len[Hardest to Time]
Meaty [Decently Timed Dash 2A] = Warc, Len
Pure, Delicious Meaty [Free Dash 2A] = Aoko, Nero
Ridiculously Delicious Meaty [Decently Timed Dash 5B] = Kouma
Stupidly Good Meaty [Easily Timed FUCKING 2C, no dash] = Riesbyfe
Off a Double JBC Airthrow in the corner
No Meaty, but Anti-Mash [On Point Dash 2A] = Vermillion, Akiha, Seifuku, Arc
No Meaty, but Anti-Mash [Decently Timed Dash 2A] = Tohno, Nanaya, Warakia, Satsuki, W.Len[Hardest to Time]
No Mety, but Anti-Mash [Easily Timed 2A] = Warc
Pure, Delcious Meaty [On point dash 2A] = Aoko , Nero, Len [Hardest to Time]
Ridiculously Delicious Meaty [On Point Dash 5B] = Kouma
Super Free Meaty [On Point 2C, no dash] = Riesbyfe[/list]