My guess:
IOTA, ICN, ARK, GBYTE, NXS, BAY, BLOCK, POSW, INCNT, SHIFT, MUSIC, MOIN
on 5/5/17
ICN, ARK, Gbyte should become strong candidates to be listed on the poloniex, but I think you must put pivx and Rlc on your list. although they're new but with solid team and good development. It must be on the polo exchange site.