Inscription
Most glyphs are either trained or discovered through a "research" button click, once-per-day mechanic. Thus most Scribes will know a glyph acquired through those means, unless they're just getting started.
Beginning with patch 3.1, there are an additional 58 glyphs that can only be learned by acquiring a random world drop book, Glyph Mastery. Ugh.
Wraith of the Lich King Glyphs
Death Knight
Complete Death Knight List at WoWHead∞
Glyph Mastery Book Discovery
Glyph of Dancing Rune
Glyph of Howling Blast
Glyph of Hungering Cold
Glyph of Unholy Blight∞: Grimhork
Glyph of Disease
Glyph of Dark Death
Druid
Complete Druid List at WoWHead∞
Glyph Mastery Book Discovery
Glyph of Barkskin
Glyph of Berserk
Glyph of Nourish
Glyph of Savage Roar∞: Cattiana
Glyph of Survival Instincts∞: Grimhork
Glyph of Wild Growth
Glyph of Monsoon
Hunter
Complete Hunter List at WoWHead∞
Glyph Mastery Book Discovery
Glyph of Chimera Shot
Glyph of Explosive Shot
Glyph of Explosive Trap∞: Grimhork
Glyph of Kill Shot
Glyph of Raptor Strike
Glyph of Scatter Shot
Mage
Complete Mage List at WoWHead∞
Glyph Mastery Book Discovery
Glyph of Arcane Barrage
Glyph of Deep Freeze
Glyph of Ice Barrier
Glyph of Living Bomb
Glyph of Mirror Image
Paladin
Complete Paladin List at WoWHead∞
Glyph Mastery Book Discovery
Glyph of Beacon of Light∞: Grimhork
Glyph of Divine Plea∞: Cattiana
Glyph of Divine Storm
Glyph of Hammer of the Righteous
Glyph of Holy Shock
Glyph of Salvation∞: Cattiana
Glyph of Shield of Righteousness
Priest
Complete Priest List at WoWHead∞
Glyph Mastery Book Discovery
Glyph of Dispersion
Glyph of Guardian Spirit
Glyph of Mind Sear
Glyph of Penance
Glyph of Pain Suppression
Glyph of Hymn of Hope
Rogue
Complete Rogue List at WoWHead∞
Glyph Mastery Book Discovery
Glyph of Cloak of Shadows
Glyph of Envenom
Glyph of Fan of Knives
Glyph of Hunger for Blood
Glyph of Killing Spree
Glyph of Shadow Dance
Glyph of Tricks of the Trade
Glyph of Mutilate
Shaman
Complete Shaman List at WoWHead∞
Glyph Mastery Book Discovery
Glyph of Feral Spirit
Glyph of Hex
Glyph of Riptide
Glyph of Stoneclaw Totem
Glyph of Thunder
Glyph of Earth Shield
Glyph of Totem of Wrath
Warlock
Complete Warlock List at WoWHead∞
Glyph Mastery Book Discovery
Glyph of Chaos Bolt
Glyph of Demonic Circle
Glyph of Haunt
Glyph of Life Tap
Glyph of Metamorphosis
Glyph of Shadowflame
Glyph of Soul Link
Warrior
Complete Warrior List at WoWHead∞
Glyph Mastery Book Discovery
Glyph of Bladestorm
Glyph of Enraged Regeneration
Glyph of Shield Wall
Glyph of Shockwave
Glyph of Spell Reflection
Glyph of Vigilance