Where is the drop down option for webtemplate 1 SharePoint Design Templates in “Create a SharePoint Site”?

I added a SharePoint Design using webtemplate 1, but can’t find anywhere in “Create a SharePoint Site” to select it. It’s not in Other Options which is where I’d assumed it would be, nor in the normal TeamSite or Communcation Site drop downs.

Templates based on 64 and 68 show fine.