Amram - This can scarcely be the same person who is mentioned in Exodus 6:18; but his descendant and representative in the generation immediately preceding that of Moses. The intervening links are omitted, as is the rule where they are not needed for some special purpose, and do not bear upon the history.
Jochebed - The name means “the glory of Jehovah (Yahweh),” one clear instance of the use of the sacred name before the Exodus.
Father’s sister - This was within the prohibited degrees after the law was given Leviticus 18:12 but not previously.