Not many other good Spanish speakers Jett players tbh, or at least not any that improve what NagZ already gives. Unless you want to just put Keznit on duelist all the time and get someone else
Xander would be the best Jett pick up for Kru tho, it's either him or maybe a BR pick up that speaks spanish, or maybe use Portuguese as main language, i know several LAS players know portuguese and i dont think KRU is the exception