[TelaFirma]

What you can do is add new categories in Admin and then add the products to all the categories that are relevant. Then, set the "POS" (or orderby) value for the "type" categories to very high numbers - say 1010, 1020, 1030, 1040...

Then you can change the categories.tpl file to only display categories below 1000, then create a duplicate of the categories.tpl and list those over 1000.

{foreach from=$categories item=c}
{if $c.order_by lt 1000}

...

{/if}
{/foreach}

then

{foreach from=$categories item=c}
{if $c.order_by gt 1000}

...

{/if}
{/foreach}