Tracing a family tree relies on a natural, unbroken flow of generations. In the ongoing record of the royal lineage, a new group of individuals, including Malchiram and Pedaiah, appears as a direct continuation of the family line.
Although their exact relationship is not spelled out directly, there is a clear agreement that all these men are the sons of Shealtiel. The record is written in a brief, concise manner. Instead of explicitly labeling them as Shealtiel's children, the narrative assumes the reader will follow the obvious context: when a father is introduced, the names listed immediately after him are naturally understood to be his sons [רד״ק, מצודת דוד].