I'm testing where I can and updating the Nightmist Wiki where I find changes to monsters' experience per damage point.
Monster - previous XPD --> updated XPD
Balrog - 98 --> 108
Dvergar Shadowcaller - 100 --> 125
Giant Chameleon - 100 --> 117
Gothmog, Lord of the Balrogs - 125 --> 170
Initiate Inquisitor - 95 --> 103
Inquisitor - 100 --> 114
Inquisitor Enforcer - 99 --> 106
Kyranchian Broodmare - ?? --> 125 (does not exist on Wiki and I didn't capture the lookover)
Paladin of the Inquisition - 100 --> 111
Resca - 89 --> 130
Waldren - 85 --> 95
