For the fellowship pannel :
- The PanelFile ID (for xml) is
ID_UISkin_FellowMiniTemplate
- The Mapping ArtAssetIDs are
player_vitals_backdrop_mini and
player_vitals_backdrop_mini_level
That's all, no way to change the class icons or other little things.
I use the book 8 files and if I don't find what I want, I look in the book 7 files that still works
Edit : still looking after the PanelFileID of "selection's target", if anyone found it ...