shall include all real and personal property and other assets included within the individual’s estate, as defined for purposes of State probate law; and

may include, at the option of the State (and shall include, in the case of an individual to whom paragraph (1)(C)(i) applies), any other real and personal property and other assets in which the individual had any legal title or interest at the time of death (to the extent of such interest), including such assets conveyed to a survivor, heir, or assign of the deceased individual through joint tenancy, tenancy in common, survivorship, life estate, living trust, or other arrangement.