The answer will depend on the language of the will and whether it contains a residuary clause. A residuary clause deals with the remainder, or the “residue” of the estate, not specifically bequeathed to heirs. The leftover assets of the estate will be distributed according to the residuary clause, which specifies how property that isn’t specifically bequeathed will be distributed.
If it is a survivorship account, or transfer on death account, it passes outside the probate process.