"Noe slik ut" is incorrect. "Something like this" should be "noe slikt"
But I don't really understand your main question about "bare noen", neither in Norwegian nor in English. "Bare"/Only is a word that sets a limit - you are not talking about everybody. But "noen"/someone counteracts that limit, and says that this could be anybody. "Bare" and "noen" don't go well together, unless you add some extra words after "noen", to specify what kind of people "noen" er.