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).
Samson has been climbing in recent years. All-time it's been given to 12,879 U.S. babies, the 974th most common name by sound today, peaking at 639 in 2025, with 639 in 2025.
Samson has no common alternate spellings by sound.
Source: U.S. Social Security Administration, “National data” baby-names files (1880–2025).