My guesses as to which UA subclasses make it into the book:
Barbarian: Ancestral Guardian, Zealot
Bard: College of Swords, Glamour, Whispers
Cleric: Forge, Protection, Grave
Druic: Dreams, Twilight
Fighter: Arcane Archer, Knight
Monk: Kensei, Drunken Master
Paladin: Conquest, Redemption
Ranger: Deep Stalker, Horizon Walker, Primeval Guardian, Monster Slayer
Rogue: Inquisitive, Scout
Sorcerer: Favored Soul, Phoenix, Sea, Stone
Warlock: The Hexblade, The Raven Queen
Wizard: Theurgy
Barbarian: Ancestral Guardian, Zealot
Bard: College of Swords, Glamour, Whispers
Cleric: Forge, Protection, Grave
Druic: Dreams, Twilight
Fighter: Arcane Archer, Knight
Monk: Kensei, Drunken Master
Paladin: Conquest, Redemption
Ranger: Deep Stalker, Horizon Walker, Primeval Guardian, Monster Slayer
Rogue: Inquisitive, Scout
Sorcerer: Favored Soul, Phoenix, Sea, Stone
Warlock: The Hexblade, The Raven Queen
Wizard: Theurgy