Na’arah- maiden?
Bananot- a funny derivative of Banot, in the contexts I have heard it used, it has a slightly negative implication.
Guys- I think is used as a generic term. Can be used for girls, or when referring to males, it can be used to gloss over the stage between boyhood and manhood- for example, in dating “I have a great guy for you” sounds more respectful than “I have a great boy for you” (especially if “boy” in question is in his twenties or thirties), but less intimidating than “I have a great man for you”. somehow, though, for females, “girl” is still used in this context until she is married.