The last one from Josephus (or Eusebius?) is his reference to "Avaris" as a "Typho's City". Manetho via Syncellus seems to translate Set as Typhon. Avaris was a city of Set; It was also a city of foreigners. If there is history within this mythology, it looks a bit garbled.
It does, but nontheless interesting, with questions such as did the Hyksos identify with Seth as they were considered as strangers and outsiders within Egypt, and to what extent did this Semitic interest in Seth inform the later biblical/Gnostic traditions...
Morph.