The Variation Selectors block spans U+FE00–U+FE0F, 16 codepoints in Plane 0 (Basic Multilingual Plane). Every one of them is assigned in Unicode 16.0.
All of its characters belong to the Inherited script.
By general category: 16 non-spacing marks (Mn).
The first 16 arrived in Unicode 3.2 (2002).
Most characters here are combining marks. See combining diacritical marks.