[Flagrick]

I have done something like that:

-------------------------------------------------------------------------------
--TESO GUILDS TYPES
-- 0 : unknow
-- 1 : fighter, guerrier, kämpfer
-- 2 : mage, mage, magier
-- 3 : Undaunted, indomptable, ???
function MyGetGuildType(skillType,  skillIndex)
    local GuildTypeRet=0
    
    if (skillType ~= SKILL_TYPE_GUILD) then return GuildTypeRet end
    
    local skillName = GetSkillLineInfo(skillType, skillIndex)
    skillName:lower()
    
    if ( (string.find(skillName, "fighter") ~= nil) or (string.find(skillName, "guerrier") ~= nil) or (string.find(skillName, "kämpfer") ~= nil)) then
        GuildTypeRet=1
    elseif ( (string.find(skillName, "mage") ~= nil ) or (string.find(skillName, "magier") ~= nil )) then
        GuildTypeRet=2
    --elseif ( (string.find(skillName, "undaunted") ~= nil) or (string.find(skillName, "indomptable") ~= nil) )
    else
        GuildTypeRet=3
    end
    
    return GuildTypeRet
end

Works in english, french and perhaps in German (i was not sure for the guils name and with german word for undaunted.