Okay. There are two interpretations here for my team (skills learned during floor/all you have is what you start with), and in an effort for full honesty, I'm gonna cover both. It's honestly not terribly relevant, esp. on this floor, buuuut... Also, a side note: Maya herself learns spells -in the middle of battle-. As a result, I can't really buy the latter interp in her case, at least, but hey. YMMV.
(Why, yes, I do realize there is -absolutely no need- for this, Kyogre's overkill SAtk+60 att beginning-game damage+Drizzle mocks this floor. I'm just establishing precedent to be lazy later for meticulous detail.)
If you allow skills to be learned during the floor:
Kyogre: Water Pulse (60 att, 20% confuse) at start. Scary Face (-2 Speed levels) at start/after first fight (learned lvl 5, starters start at lvl 5. Your call.)
Maya: Hama (35-40% ID, holy, ST) at start. Dia (~80% healing, becomes ~50% by floor 2) during/after first fight, Aqua (40% water damage, ST) during/after first fight, Media (~85% MT healing, becomes ~55% by floor 2) during/after third fight, Multi Dimension (20% ID, non-typed attack (not physical or magical)) during/after final fight.
Kyra: Starts with Res, Foi, Anti, Rimpa, Gires, Gifoi, Gra, Medice, Flaeli, Telele, Hewn. Learns nothing for a while since she's later in the game.
Garnet: Starts with Cure, Protect, Panacea, gets... Fuck, I hate FF9 skill acquisition. I leave this part to you guys, it's not my area. >_>
Priest: Starts with Cure, can pick up Life/Protect really quick, rounds out as needed. Not too difficult, Priest stuff is cheap.
W/ skills learned during floor: (As a reminder, Kyogre's Drizzle is on all during this floor.)
Team Taishyr vs. Palmer and Mist Dragon - Kyogre.
Team Taishyr vs. Steelix, Shuckle and FF1 Knight - If you think the offense is scary (...for some reason), Garnet has Protect and just casts it on Priest to make sure he can't be OHKOd for two turns. Kyogre.
Team Taishyr vs. Marle, Alice and FFT Priest - Amusingly cute fight, in theory. Scary Face makes it mockable, Water Pulse+Aqua+Hewn make the team wince even with their magical durability (and Maya physicals are competent at this point, if respect for their magic defense is -really- high. Whatevs). Move on.
Team Taishyr vs. Rampage Drive - My team is mage oriented. Rampage Drive is emo and does not last a round.
Team Taishyr vs. Lich (FF1) - ST wonder versus, again, Drizzle Aqua + Water Pulse + Kyra damage + Priest staff whack. This doesn't end well.
W/ skills only from the start (presuming Scary Face is learned, starter = L5 and all but I'm weird)
Team Taishyr vs. Palmer and Mist Dragon - Maya gets to shoot things, what fun~ But I have Kyogre. So.
Team Taishyr vs. Steelix, Shuckle and FF1 Knight - Maya gets to spam ID on the enemies! ...presuming Kyogre doesn't just OHKO Steelix and badly damage the other two. Whatevs.
Team Taishyr vs. Marle, Alice and FFT Priest - Kyogre Scary Faces, enemy team now has speed of mockery and cannot reliably keep healed against a full assault. Maya would be using physicals here anyway, arguably~
Team Taishyr vs. Rampage Drive - Maya's useless again! (She doesn't like this interp.) Kyogre/Kyra still make this boss emo.
Team Taishyr vs. Lich (FF1) - And this battle works much the same. So!
Andrew passes easily to me (Yukiko in her own dungeon would mop up pretty cleanly, good SP reserves + Agi spam, Yuris are solid even now). Magic I'm also gonna give a gutshot pass this floor, but need to look it through.