Göbl’s third wave were the Nezak Huns who settled around Kabul. Early scholars called them 'Napki'. The exact chronology is unclear. The first written accounts come from the early seventh century. Some place their foundation in the late sixth century after the fall of the Hephthalites. The coins imply a foundation in the late fifth century.See Klaus Vondrovec: Coinage of the Nezak. In: M. Alram, D. Klimburg-Salter, M. Inaba, M. Pfisterer (publisher): Coins, Art and Chronology II. The First Millennium C.E. in the Indo-Iranian Borderlands. Wien 2010, p 169–190, here pp 169 and 173f.
