Of the sons of Phinees, Gersom. Of the sons of Ithamar, Daniel. Of the sons of David, Hattus.

Of the children of Phinehas, Gershom; of the children of Ithamar, Daniel; of the children of David, Hattush;

Punctuate as follows:
Ezra 8:2. of the sons of David, Hattush of the sons of Shechaniah.
Ezra 8:3. Of the sons of Pharosh, Zechariah.
Hattush, the descendant of David, was the grandson of Shechaniah (see marginal reference).
Most of these names Ezra 8:2-14 occur also as those of heads of families in the list of the Jews who returned with Zerubbabel Ezra 2:3-15. The Septuagint and Syriac versions supply omissions in Ezra 8:5, Ezra 8:10.

Gershom - One of the descendants of Phinehas, son of Eliazar.

Of the sons of Phinehas; Gershom: of the sons of Ithamar; Daniel,.... Not Daniel the prophet, he was of the royal blood, and of the tribe of Judah; this was a priest, a descendant of Ithamar, as Gershom was of Eleazar in the line of Phinehas:
of the sons of David; Hattush; perhaps the same with him in 1-Chronicles 3:22, who was a descendant of David the king; these three men seem to have come alone without any of their families, at least they are not mentioned, nor their numbers given, as the rest that follow be.

Priests and descendants of David. Of priests, Gershom of the sons of Phinehas, and Daniel of the sons of Ithamar. Gershom and Daniel are the names of heads of priestly houses, and "sons of Phinehas and sons of Ithamar" designations of races. Phinehas was the son of the high priest Eleazar, the son of Aaron, and Ithamar a younger son of Aaron, 1-Chronicles 6:4 and 1-Chronicles 6:3. This does not signify that only the two priests Gershom and Daniel went up with Ezra; for in Ezra 8:24 he chose twelve from among the chief of the priests, who went up with him, to have charge of the gifts (Bertheau). The meaning is, that Gershom and Daniel, two heads of priestly houses, went up, and that the house of Gershom belonged to the race of Phinehas, and that of Daniel to the race of Ithamar. A Daniel is named among the priests in Nehemiah 10:7, but whether he is identical with the Daniel in question does not appear. Of the sons (descendants) of David (the king), Hattush, as head of a house. A Hattush, son of Hashabniah, occurs Nehemiah 3:10, and a priest of this name Nehemiah 10:5 and Nehemiah 12:2. Hattush also holds the first place among the sons of Shemaiah enumerated 1-Chronicles 3:22, who probably were among the descendants of David. It seems strange that the numbers neither of the priests nor of the sons of David who went up with Ezra should be given, since from v. 3 onwards, in the case of the houses of lay races, the numbers of those who returned to the home of their ancestors is regularly stated.