This Crusader Kings 3 mod gives faction members an icon in their character view.
It used to also display a breakdown of their reasons for being in the faction, but that is now part of the base game in the factions window, so it has been removed from this mod.
This mod is available in the Steam Community Workshop at https://steamcommunity.com/sharedfiles/filedetails/?id=2791137603
By necessity, this mod contains some code files from Paradox, so it cannot be distributed without their permission.
This github repository exists solely for coordinating development on the mod.