Yes. Use the search and search "Elesbaan"
He's listed as St. Elesbaan. Hence, the answer to your questions are, yes, he is venerated as a Saint, and no, he wasn't miaphysite.
Looking around the internet: Like São Benedito (Benedict the Moor) and Santa Ifigênia (Ephigenia of Ethiopia), Santo Elesbão (Elesbaan) seems to be better known in Brazil then in other places.
Santo Elesbão and Santa Ifigênia on the altar of the eponymous Church in the center of Rio de Janeiro R.J., first build in A.D. 1754.