[Morph Bark]

Tier 1
Golden Alchemist [Unique, Face, Magic, Moneymaker]
Metagamer [Silly, Arcane, Divine, Vancian, Magic, Melee, Ranged, Sage]
Scholar [Arcane, Divine, Vancian, Magic, Sage]


Tier 2
Blue Mage* [Video Game, Arcane, Vancian, Magic, Ranged]
Blue Mage [Video Game, Magic, Melee]
Deviant [Divine, Vancian, Magic, Sage, Scout]
Ebon Initiate [Arcane, Invoker, Crafter, Face, Magic, Melee, Ranged]
Exarch of the Emerald Shield [Comic, Unique, Crafter, Healer, Magic]
Hakurei Shrine Maiden [Oriental, Video Game, Arcane, Vancian, Face, Magic]
Haruspex [Arcane, Vancian, Buffer, Magic, Sage]
Limit Mage [Video Game, Arcane, Unique, Vancian, Magic, Expanded]
Limit Psion [Video Game, Psionic, Unique, Magic, Sage, Expanded]
Tendersoul [Divine, Vancian, Buffer, Healer, Magic]
War-Marked [Original, Unique, Melee]
Wordsmith [Video Game, Crafter, Magic, Melee]
Worldrender [Original, Unique, Debuffer, Face, Healer, Magic, Melee]


High Tier 3
These classes generally have much higher levels of power than average Tier 3 classes and may have a gamebreaker or two, but nothing that would bump them up to Tier 2.
Blade Scholar [Martial Adept, Melee, Sage]
Chronoshifter [Original, Unique, Buffer, Debuffer, Healer, Magic, Expanded]
Elder [Divine, Vancian]
Eternal Royal [Video Game, Martial Adept, Face, Melee, Roleplay]
Grandmaster [Arcane, Vancian, Buffer, Healer, Magic]
Greybeard [Video Game, Unique, Buffer-Self, Face, Magic, Melee, Expanded]
Gunslinger [Modern, Martial Adept, Ranged, Scout]
Harrowed [Horror, Unique, Debuffer, Face, Magic, Melee]
Machinist [Gamechanger, Steampunk, Martial Adept, Crafter, Melee, Sage, Roleplay]
Magister [Arcane-Unique, Magic, Sage]
Nord's Blade [Gamechanger, Martial Adept, Face, Melee]
Planeswalker [Arcane, Vancian, Face, Healer, Magic, Sage, Scout]
Scholar [Video Game, Martial Adept, Melee, Sage]
Son of Man [Divine, Vancian, Buffer, Magic, Melee, Ranged, Sage]
Soulblade [Incarnum-Unique, Martial Adept, Magic, Melee]
Soulweaver [Horror, Face, Healer, Magic]
Stoner [Binding-Unique, Face, Melee, Ranged, Trapmonkey]
Teleporter [Gamechanger, Arcane, Vancian, Face, Magic]
Vector Witch [Japan, Arcane, Vancian, Debuffer, Face, Magic, Ranged]
Xenoalchemist [Horror, Unique, Healer, Sage, Expanded]


Tier 3
Battle Psychic [Martial Adept, Psionics, Magic, Melee, Scout]
Chorister [Divine, Vancian, Buffer, Face, Healer, Magic, Incomplete]
Chozo Warrior [Sci-Fi, Video Game, Melee, Ranged, Scout]
Companion [Arcane, Vancian, Face, Magic, Sage, Scout]
Connoisseur [Horror, Unique, Face, Melee, Expanded]
Debaser [Arcane, Vancian, Debuffer, Face, Magic, Fix]
Divine Champion [Divine, Vancian, Face, Magic, Melee, Ranged, Scout]
Dovahkiin [Video Game, Arcane, Unique, Buffer-Self, Face, Magic, Melee, Ranged, Expanded]
Engineer [Steampunk, Unique, Crafter]
Flowists [Oriental, Original, Unique, Buffer-Self, Face, Melee, Sage, Scout]
Gambler [Original, Buffer, Debuffer, Face]
Hemoscribe [Horror, Original, Unique, Face, Magic, Melee, Scout, Incomplete]
Improviser [Original, Martial Adept-Unique, Healer, Melee, Scout, Trapmonkey]
Indigo Trickster [Original, Arcane, Invoker-Unique, Buffer-Self, Face, Magic, Melee, Scout, Trapmonkey]
Invisible Guardian [Original, Face, Melee, Scout, Tank]
Kaijin [Modern, Japan, Martial Adept, Buffer-Self, Melee, Ranged]
Librarian [Arcane, Divine, Martial Adept, Sage]
Limit Dragoon [Video Game, Unique, Face, Melee, Tank, Expanded]
Lord of the Uttercold [Japan, Arcane, Vancian, Face, Magic, Melee]
Malefactor [Unique, Debuffer, Face, Magic, Melee, Tank, Fix]
Masque [Horror, Divine, Vancian, Magic, Melee]
Olympian [Pathfinder, Face, Melee]
Overdrive Knight [Video Game, Face, Magic, Melee, Expanded]
Sagittarius [Healer, Ranged, Scout]
Sentai [Modern, Japan, Martial Adept, Expanded, Buffer, Face, Magic, Melee, Ranged, Scout, Tank]
Shield Warrior [Martial Adept, Melee, Tank]
Soul Devourer [Invoker, Debuffer, Face, Magic, Melee]
Soul Disciple [Incarnum, Martial Adept, Magic, Melee, Scout]
Spellbound [Original, Arcane-Unique, Buffer-Self]
Sublime Archer [Martial Adept, Ranged, Scout]
Sublime Matador [Martial Adept, Face, Melee, Sage]
Trueforged [Melee, Ranged]
Warlord [Martial Adept, Buffer, Face, Melee, Tank]
Warrior-Poet [Martial Adept, Buffer, Face, Melee]


Borderline Tier 3-4
High Tier 4 or Low Tier 3, either way they mean the same: classes that are just a little behind in either versatility or power to really make the Tier 3 cut, but standing above most Tier 4s, they could fall in either Tier depending on the level of optimization used.
Dabblemaster [Original, Arcane, Binding, Divine, Incarnum, Infusions, Invoker, Martial Adept, Psionic, Shadow, Truenames, Buffer, Face, Magic, Sage, Scout]
Destined Hero [Gamechanger, Melee, Ranged, Tank]
Gaoler of Frostflame [Unique, Debuffer, Magic, Ranged]
Iron Man [Pathfinder, Steampunk, Magic, Ranged]
Machiavellian [Original, Any Genre, Buffer, Debuffer, Face]
Magitech Templar [Steampunk, Magic, Melee]
Solar Ascendant [Magic, Melee, Ranged]
Sniper [Ranged, Scout, Fix]
Sublime Sohei [Martial Adept, Melee, Fix]
Twilight Caster [Unique, Magic, Incomplete]
Witch Doctor [Horror, Buffer, Debuffer, Face, Magic, Incomplete]


Tier 4
Note that Tier 4 is not bad. Tier 4 is is, after all, "capable of doing one thing quite well, but often useless when encounters require other areas of expertise, or capable of doing many things to a reasonable degree of competance without truly shining." Many great classes are Tier 4.
Alchemist [Invoker, Crafter, Magic, Sage]
Barrier Mage [Arcane, Vancian, Magic]
Battle Shinigami [Oriental, Japan, Divine, Vancian, Magic, Melee, Scout]
Blademaster [Martial Adept-Unique, Melee]
Chosen Warrior [Video Game, Buffer, Magic, Melee, Scout]
Dualists [Gamechanger, Original, Melee]
Esper Knight [Television, Incarnum-Unique, Magic]
Gentle Fist Adept [Oriental, Japan, Melee, Scout]
Jester [Arcane, Vancian, Face, Magic, Melee, Tank]
Kido Shinigami [Oriental, Japan, Divine, Vancian, Magic, Melee, Scout]
Limit Freak [Horror, Video Game, Unique, Melee, Expanded]
Limit Knight [Video Game, Unique, Crafter, Melee, Tank, Expanded]
Limit Monk [Video Game, Unique, Melee, Expanded]
Limit Ninja [Video Game, Unique, Melee, Scout, Expanded]
Limit Sniper [Video Game, Unique, Crafter, Ranged, Expanded]
Punchmaster [Melee]
Pyromancer [Face, Healer, Magic, Ranged]
Runner [Melee, Scout]
Shield [Melee, Tank]
Thief-Acrobat [Melee, Scout]
White Clad [Video Game, Face, Melee, Scout, Expanded]


Tier 5
If your class is here, consider reworking it. Unless Tier 5 was your aim.
Barkeeper [Crafter, Face, Melee]
Botanimorphist [Magic, Melee]
Channeler of the Planes [Divine, Vancian, Magic]
Fanatic [Face, Melee]
Farmer [Silly, Historical, Melee]
Handyman [Face, Healer, Sage, Scout, Trapmonkey]


Tier 6
Pity the common man, for he is powerless.
Redshirt [Gamechanger, Silly, Television, Buffer, Debuffer]


Variable Tier
Assume that you always need special permission to play one of these classes if I am DMing for you. This is because depending on your choices within the class, these classes can vary from Tier 5 all the way up to Tier 2 or even 1.
Stylist [Face, Magic, Sage, Trapmonkey]

Spoiler

Most of the Styles are Tier 4, which combined make a decent Tier 3 or at least a Borderline Tier 3-4 class, but some of the Styles bring it up to Tier 2. Beastly and Cosplay in particular.

Traveller [Original, Arcane, Divine, Face, Sage]

Spoiler

The Traveller is a Variable Tier class because it’s casting mechanic is effectively like the cleric’s in practice and they can choose what class’ spell list they have access to. Thus, they can choose the Cleric, Druid or Sorcerer/Wizard spell list, which would make them Tier 1. Any other class’ spell list that includes spells up to level 9 will make the class a Tier 3. Choosing a spell list that only goes up to level 4, 5 or 6 makes this class Tier 4.