In every Jin Yong story in which the Beggar's Union appears, there are always Beggar's Union Elders who have good, but nowhere near Great or Elite-level martial arts. I'm talking about people such as Elder Sung from DGSD, Elders Gan and Lo from L/ROCH, and some of the elders we saw in HSDS.
Among the various Beggar's Union Elders who never approached Greats/Elite level, who had the best martial arts?