Which term describes naming a contingent beneficiary as "all of my children"?

A successive beneficiary refers to someone who will inherit after the primary beneficiary, typically in a sequential order. This term does not apply to a group designation; instead, it focuses on the order of inheritance rather than the collective naming of a group.

A tertiary designation implies the third level in a hierarchy of beneficiaries. This term is used to specify a beneficiary who receives benefits only if the primary and secondary beneficiaries are unable to do so. It does not pertain to naming a group of individuals collectively, but rather to the order of succession in beneficiary designations.

A trust arrangement involves creating a legal entity to hold and manage assets on behalf of beneficiaries. While a trust can include class designations for beneficiaries, the term itself does not specifically describe the act of naming a group of beneficiaries like "all of my children." Rather, it refers to the broader concept of asset management and distribution.