Hagaba
Hagaba is named only as the head of a family among the Nethinim — temple servants — whose descendants returned from the Babylonian exile. The two parallel rosters spell the name with a small variation, but list the same house in the same position among the returnees.
A family of Nethinim among the returnees
Ezra's register lists the family as "Hagabah." "the sons of Lebanah, the sons of Hagabah, the sons of Akkub" (Ezra 2:45). The household sits in a stretch of Nethinim names, between Lebanah and Akkub.
Nehemiah's parallel list spells the head of the house "Hagaba." "the sons of Lebana, the sons of Hagaba, the sons of Salmai" (Neh 7:48). The pairing with Lebana stays constant; the third neighbor differs slightly between the two registers, but Hagaba's house is steady in the count of returning Nethinim.