These verses have several issues that suggest the Hebrew text might be damaged:
Maacah is listed as both the sister and wife of Makir (1 Chronicles 7:15–16).
Huppim and Shuppim were earlier listed with Benjamin (1 Chronicles 7:12), not Manasseh.
Those considered Gileadites (1 Chronicles 7:16–17) are vaguely linked to Gilead, whose direct descendants are not listed (compare Numbers 26:30–33).
The sons of Shemida are not connected to the genealogy (1 Chronicles 7:19) Shemida was one of Gilead’s descendants (Numbers 26:32).