not entirely true. a couple planets, dozens of clones, thousands of individuals, and an entire battalion of Republic troops(Rahm Kota's) were still Jedi sympathetic. rather than a jedi remnant, i can see some kind of early rebellion happening while the separatists were still around, before being crushed, and those survivors join the Alliance to tear down the empire. so, maybe a small rebellion with mostly smaller ships, but not substantial enough to be a threat unless you mess up really bad. also, it could only have obscure jedi, if any, in it