NPCs with multiple factions

[Ravenfeather]

If an NPC is listed on the wiki has having multiple factions, which faction determines how they consider you? Is it a specific one, or the worst, or the average, or what? For example, the Qeynos-area druids and rangers are Guards of Qeynos, Jaggedpine Treefolk, and Protectors of the Pine. I've killed at least 300 gnolls in Blackburrow, which raises the first two, but the rangers/druids are still Scowling, while the guards, monks, and merchants have all gotten three tiers better. Is it because I haven't raised Protectors of the Pine?