Gracious
Iann is a variant of Ian, which is the Scottish Gaelic form of John. It ultimately derives from the Hebrew name Yochanan, meaning 'Yahweh is gracious.' This specific spelling with a double 'n' is a modern stylistic variation.
Less common today
Iann isn't in the latest US Top 1000. It last peaked at #3,034 in 2003.
American rapper and singer-songwriter
US births per 5-year period, 1990βpresent (SSA data).