This template is a shortcut for {{Unbulleted list|list_style=text-align:center}}. It supports the same parameters as that template, and additional list styles can also be specified using |list_style= without it overriding the centering.
{{Unbulleted list|list_style=text-align:center}}
|list_style=
{| class="wikitable" ! scope="col" | Header |- | {{Unbulleted list center|A|B|C|list_style=color:red|item2_style=color:blue}} |}