[circonian]

Oh, yeah your right it is local.
No I hadn't looked at it, but I see you were all ready doing what I suggested.

Looks like it would work to me. Although I think you could get rid of one of the loops by doing this:

Warning: Spoiler

function TI.HookNotifications()
    ZO_PreHook(NOTIFICATIONS.providers[10], "BuildNotificationList", function(self)
        for index = 1, GetNumRaidScoreNotifications() do
            local notificationId = GetRaidScoreNotificationId(index)
            local numMembers = GetNumRaidScoreNotificationMembers(notificationId)
            local showNotification = false
            local guildMembers = {}
            for memberIndex = 1, numMembers do
                local displayName, _, _, isGuildMember = GetRaidScoreNotificationMemberInfo(notificationId, memberIndex)
                if isGuildMember then
                    -- Change this:
                    -- table.insert(guildMembers, displayName)
                    -- To something like this:
                    table.insert(guildMembers, {["NAME"] = displayName, ["MEMBERINDEX"] = memberIndex})
                end
            end
            
            -- change this:
            --for _, name in ipairs(guildMembers) do
            -- To this, because were now getting a table:
            for _, tPlayerInfo in ipairs(guildMembers) do
                for guildIndex = 1, GetNumGuilds() do
                    if not showNotification and TI.GetGuildSetting(guildIndex) and TI.GetRaidScoreNotifySetting(guildIndex) then 
                        local guildId = GetGuildId(guildIndex)
                        
                        -- And I think you could then avoid doing this loop:
                        --for memberIndex = 1, GetNumGuildMembers(guildId) do 
                        
                            -- change this:
                            --local displayName = GetGuildMemberInfo(guildId, memberIndex)
                            -- to this:
                            local displayName = GetGuildMemberInfo(guildId, tPlayerInfo["MEMBERINDEX"])
                            
                            -- and last change this:
                            --if displayName == name then
                            -- to this:
                            if displayName == tPlayerInfo["NAME"] then
                                --d(zo_strformat("RL notify hit: <<1>> from <<2>>", displayName, GetGuildName(guildId)))
                                showNotification = true
                                break
                            end
                        --end
                    end
                end
            end
            if not showNotification then
                --d(zo_strformat("Removed RL notification! (i: <<1>>, id: <<2>>)", index, notificationId))
                RemoveRaidScoreNotification(notificationId)
            end 
        end
    end)
end

EDIT:
Or I may have spoke to soon. I've never done any pvp/raid stuff. I have no idea how any of it even works. I may be wrong about what I said above...I thought this memberIndex:

local numMembers = GetNumRaidScoreNotificationMembers(notificationId)
        local hasFriend = false
        local hasGuildMember = false
        for memberIndex = 1, numMembers do
            local displayName, characterName, isFriend, isGuildMember = GetRaidScoreNotificationMemberInfo(notificationId, memberIndex)

was refering to the same memberIndex used for a guild members index,

local displayName = GetGuildMemberInfo(guildId, memberIndex)

but I read it again and think they might not be the same? Does the first one refer to memberIndex as the "memberIndex" for members of a raid party (people involved in that notification)? If so what I said would not work.