Interesting thoughts on your list. Do you max out all of the dresspheres for all of the characters, or assign different ones for different characters? I go with the second one.

Here's my ranking. Never played with the festival goes and the psychic so they aren't on the list.

#14 - Mascot. I just don't like it.
#13 - Songstress. I really don't like it. I should, but I don't. The only dance I've ever cared about is the one that hastes my party. Then again, as much as I like status buffs in theory, I hardly ever actually care to use them.
#12 - Lady Luck. I don't have the skill or luck to use this dressphere effectively.
#11 - Alchemist. Unlimited items is cool and all, but I've always hated using items in a fight for some reason. In any Final Fantasy game.
#10 - Samurai. For me this doesn't accomplish anything that other dresspheres do better and that I prefer using.
#9 - Gun Mage. I like the dresses, but other than in FFIX, I'm awful at learning Black Magic. I wish I was more successful at it.
#8 - Trainer. I like how they're jack of all trades. I have fun using the Trainer.
#7 - Warrior. Useful early on, but I've never been much for physical attackers.
#6 - Gunner. Pretty good and fun to use.
#5 - Berserker. Fast and strong.
#4 - Thief. Quick and fun to use. Steal is useful.
#3 - White Mage. Healing without needing to use items always makes me happy.
#2 - Dark Knight. Strong and has a lot of spells I like.
#1 - Black Mage. Just because I <3 Black Mages.