Although Sukunabikona is said to be a toraijin (people from overseas, especially from China and Korea, who settled in early Japan and introduced Continental culture to the Japanese) because of the description that says he came from over the sea, this is only due to an association made from coming on a ship with a foreigner and does not go beyond the bounds of being a unique story.
海から来訪したとの記述により渡来人という説もあるが、船で渡来＝外国人という単純な図式からの連想であり、奇説の域を出ない。