The right to offer a will for probate shall belong to the executor, if one is named. If for any reason the executor fails to offer the will for probate with reasonable promptness, or if no executor is named, any interested person may offer the will for probate. As used in this Code section, the term "interested person" shall include, but shall not be limited to, any legatee, devisee, creditor of the decedent, purchaser from an heir of the decedent, an administrator appointed for the decedent prior to the discovery of the will, and any individual making a claim under an earlier will.