Executors "step into the shoes" of the deceased and have similar rights and powers to wind up the personal affairs of the deceased. This may include continuing or filing lawsuits that the deceased was entitled to bring, making claims for wrongful death, paying off creditors, or selling or disposing of assets not particularly gifted in the will, among others. But the role of the executor is to resolve the testator's estate and to distribute the estate to the beneficiaries or those otherwise entitled.
Next, start adding your non-tangible assets to your list, such as things you own on paper or other entitlements that are predicated on your death. Items listed here would include brokerage accounts, 401(k) plans, IRAs, bank accounts, life insurance policies, and other policies such as long-term care, homeowners, auto, disability, and health insurance.