You can only choose from these to keep order.. if you want a special class make a request and it's a maybe

Archer - Uses bows and arrows
Bard - Sings to cause effects
Beastmaster - Controls other monsters
Berserker - Attacks uncontrollably
Black Mage - Uses magic to harm enemies
Blue Mage - Learns enemy skills
Chemist - Uses items more effectively
Dancer - Dances to cause effects
Dark Knight - Sacrifices self to cause damage
Dragoon - Uses spears and jump attacks
Fighter - Physical fighter who uses various attacks.
Gambler - Abilities are based on chance
Geomancer - Uses spells related to battlefield
Gunner - Uses rifles or pistols
Knight - Physical class that relies exclusively on high defense and attack.
Magic Knight - Combines black magic and physical attacks
Mime - Copies the last action by an ally
Monk - Fights with bare hands and chakra
Ninja - Throws items to cause damage
Paladin - Combines physical strength with white magic and can cover allies.
Red Mage - Can cast white and black magic
Samurai - Throws money at enemy to cause damage
Scholar - Can look at enemy statistics
Soldier - Sword user who reduces enemy stats.
Summoner - Summons huge monsters to fight
Thief - Steals from enemy
Time Mage - Uses magic to speed up or slow down actions
Warrior - Initial sword user class.
White Mage - Uses magic to heal allies