For a detailed answer, download the
Update 6 UI Skinning Pack and then, run a search inside using "vitals" as keyword, copy-paste the result list in a new folder and then browse it.
Globally, it seems (I use this word because the pack is not reflecting 100 % accurately the real content of lotro client) that "good" portraits include the level backdrop icon, and "evil" ones are separated except with swarm (and of course anniversary ones when playing a monster).