How to read the band →
Solid line = floor (spellings that unambiguously belong to the group). Shaded band up to the dashed edge = ceiling (the most it could reach if every ambiguous spelling counted here).
Tatum
Tatum has been climbing in recent years. All-time it's been given to 46,492 U.S. babies, the 219th most common name by sound today, peaking at 3,842 in 2025, with 3,842 in 2025.
By sound, Tatum also includes the spellings Taytum.
Rising
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).