In contrast to templates for namespaces, that can be linked with [[XXX:template]], these templates are not for a whole namespace.

• dated is the template for specific dated entries (in contrast to the template for a month of dated items)
• namespace is the template for namespaces
• term is the template for terms
• wr is a specific template for wiki requirements

There isn't a template for templates, as all templates are different by their very nature.