Well, this is my list. I'm sure there are more, but this is in CR order w source listed.
undead source cr
Thrall, Risen MNOM 1/2
Thrall, Warrior MNOM 1/3
Skeleton: 1 HD MM-1 1/3
Zombie: 1 HD MM-1 1/4
Thrall, Slave MNOM 1/4
Skeleton: 1/2 HD MM-1 1/6
Zombie: 1/2 HD MM-1 1/8
Acid Shambler CC-2 1
Blood Zombie (Blood Barnacles) CC-2 1
Ghoul MM-1 1
Siege Undead, Boneman CC-2 1
Skeleton: 2-3 HD MM-1 1
Thrall, Lieutenant MNOM 1
Zombie: 2-3 HD MM-1 1
Zombie: 4-5 HD MM-1 1
Alley Reaper CC-1 2
Carcass CC-3 2
Chardun-Slain CC-1 2
Ghoul Hound CC-3 2
Inn Wight CC-1 2
Night-Touched, Hound CC-2 2
Pain Doll CC-3 2
Seeker's Bane CC-2 2
Siege Undead, Meatman CC-2 2
Siege Undead, Sandman CC-2 2
Skeleton: 4-5 HD MM-1 2
Symbiont, Fiendish - Ghostly Visage [+1 CR] FF 2
Tattooed Corpse CC-2 2
Zombie: 6-7 HD MM-1 2
Allip MM-1 3
Bonewing CC-2 3
Cursed Spirit MINI 3
Dread Crawler CC-3 3
Ghoul, Ghast MM-1 3
Ghoul, Lacedon MM-1 3
Gravehound MINI 3
Mechanithrall MNOM 3
Mist Reaper CC-2 3
Mistwalker CC-1 3
Sand Mummy CC-2 3
Sand Mummy, Greater CC-2 3
Shadow MM-1 3
Skeleton: 6-7 HD MM-1 3
Skull King CC-2 3
Thrall, Bane MNOM 3
Unholy Child CC-1 3
Well Spirit CC-1 3
Wight MM-1 3
Zombie: 8-11 HD MM-1 3
Bottle-Imp CC-1 4
Burned Ones CC-2 4
Butcher Spirit CC-1 4
Fleshcrawler CC-1 4
Ghoul, Memory-Eater CC-1 4
Ghoul, Poisonbearer CC-3 4
Ghoul, Slarecian CC-1 4
Ice Haunt CC-1 4
Night-Touched, Controller CC-2 4
Plague Gator CC-3 4
Skeleton: 8-9 HD MM-1 4
Skulldugger ABYSS 4
Spirit of the Plague CC-1 4
Thrall, Skarlock MNOM 4
Vampire Spawn MM-1 4
Zombie: 12-14 HD MM-1 4
Forsaken Spirit CC-3 5
Ghoul, Overghast CC-3 5
Marrow Knight CC-1 5
Mummy MM-1 5
Mummy, Spiderweb CC-3 5
Shadow Lord CC-2 5
Shaft Wight MNOM 5
Skeleton: 10-11 HD MM-1 5
Spawn of Kyuss MM-2 5
Wraith MM-1 5
Zombie: 15-17 HD MM-1 5
Hollowed MNOM 6
Skeleton: 12-14 HD MM-1 6
Wyldegeist MNOM 6
Zombie: 18-20 HD MM-1 6
Akikage ABYSS 7
Ashcloud CC-3 7
Disembodied MNOM 7
Love-Scorned Soul CC-3 7
Necromantic Golem (Carnival Krewe) CC-1 7
Quth-Maren FF 7
Skeleton: 15-17 HD MM-1 7
Spectre MM-1 7
Unhallowed, The - False Lover CC-1 7
Unhallowed, The - Treacherous Thief CC-1 7
Bodak MM-1 8
Dread MNOM 8
Mohrg MM-1 8
Shadow, Greater MM-1 8
Skeleton: 18-20 HD MM-1 8
Troll, Black MNOM 8
Unbegotten CC-3 8
Unhallowed, The - Faithless Knight CC-1 8
Unhallowed, The - Forsaken Priest CC-1 8
Vilewight VILE 8
Bhut FF 9
Caller in Darkness PSI 9
Excrutiator MNOM 9
Pistol Wraith MNOM 9
Sepulchral Lurker MNOM 9
Abyssal Ghoul FF 10
Crimson Death MM-2 11
Deep Stalker CC-3 11
Devourer MM-1 11
Naga, Bone MM-2 11
Ulgurstasta FF 11
Wraith, Dread MM-1 11
Ghoul, Gormul CC-3 12
Slon, Gravekeeper CC-3 13
Demon, Blood Fiend FF 14
NightShade, Nightwing MM-1 14
Hullathoin FF 15
Kadum's Leviathan CC-2 15
Mummy, 10th LV Cleric MM-1 15
Gravecrawler MM-2 16
Jahi MM-2 16
NightShade, Nightwalker MM-1 16
Phoenix, Black CC-3 16
Banshee MM-2 17
Deathbringer MM-2 17
Effigy MM-2 17
NightShade, Nightcrawler MM-1 18
Corpse Gatherer MM-2 19
Famine Spirit MM-2 19
Ragewind MM-2 19
Crawling Head FF 20
undead templates source cr
Boatman, Progeny MNOM [+1]
Bone Creature VILE [+1]
Corpse Creature VILE [+1]
Spellstitched MM-2 [+1]
Belsameth Spider CC-2 [+2]
Ghost MM-1 [+2]
Ghost Brute SAVG [+2]
Huecuva FF [+2]
Lich, Iron MNOM [+2]
Litch MM-1 [+2]
Souless [1-6 LV Paladin] CC-3 [+2]
Swordwraith FF [+2]
Vampire MM-1 [+2]
Death Knight MM-2 [+3]
Mummified Creature SAVG [+3]
Souless [7-12 LV Paladin] CC-3 [+3]
Spectral Creature SAVG [+3]
Umbral Creature SAVG [+3]
Wight SAVG [+3]
Souless [13+ LV Paladin] CC-3 [+4]
Wraith SAVG [+5]
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