Monsters tackled this far
By LotrFan
Abeil to Darkmantle
By Wotc
Demons:
Abyssmal Ravager - Reduce cr from 5 to 3
Zovvut - Reduce cr from 9 to 7
Kelvezu - Reduce cr from 18 to 14
Devils:
Malebranche - 2 versions exist. The MM2 version was revised upwards from 9 to 12, while FC2 improved its stats to make it a more worthy cr14.
Giants
Hellfire wyrm
Leviathan
Linnorms
Megapede
Ocean Strider