will i inherit my dad's money if the nominee of his bank account is someone else?

my (F18) father (M64) has a ton of money in multiple bank accounts but me and sibling (F19) are not the nominee in even a single one (he despises us because we are girls, and he wanted boys). my father is diabetic and has blood pressure problems. he can die any moment. who will get the money if he dies? will the nominee simply act as a trustee until the legal heirs are identified by law? or will the nominee just simply keep the money all to himself? will i get a penny or not?