Team Jenna vs Team Yuna:
Lani does something.
Yuna summons Anima, OHKOs Lani. Tanks some hits (Jenna isn't dangerous offensively yet), OHKOs Canas. Possibly gets off Oblivion before going down if Jenna/Gades try evadeable attacks, but regardless, by the time she's dead, it's Jenna and Gades vs. a full, healthy team which includes Ricardo's buffing game and a whole lot of healing... not to mention more aeons on the way.
That's assuming a competent Gades, mind. It's even less close for me.
Heavy/Godlike:
Ryu3 > Xenobia > Berle > Zed > Gades
Ryu3 smash. Xenobia beats Berle because I always let duellers attack in Meta-Guard openings which means speed doesn't matter, and Xenobia is tough against physicals. Zed is Heavy. Gades is Light. Yeah.
Middle/Heavy:
Belcoot > Tifa > Canas > Peter. Hojo and Lynx... hmm.
Belcoot can chip then finish against Tifa. An increased crit rate should help him beat Canas at worst? Sure. I'm not certain there, granted. Owns the other two.
Tifa beats Canas because he lacks overwhelming damage, and will have trouble dancing around even a L2. Not to mention, a L1 doubled with a physical probably kills him, and a limit turn triggered off a counter would be ugly. She beats Peter because Peter can't damage control at all, a simple armour choice ensures his damage will be high enough to eat a L2. Hojo gets owned by Sleep immunity.
Hojo might have a chance against both Lynx and Peter, since neither block sleep or are overly impressive. Open to arguments.
No clue on Lynx, although he should beat up the scrubbier duellers. Hojo and Peter at worst.
Light/Middle:
Nash, Luke, Kornell, Shiba, Lani, Ricardo
Lani > Kornell > Nash >>> Ricardo > Luke >>>> Shiba
Lani is too much faster than Kornell. Both beat Nash via status immunity and then there's a large dropoff. Ricardo should be able to stall Luke and finish with a double easily enough, I think. Shiba is just godawful.