Assign different product templates to different categories

Using Creative elements with an override file you can create multiple templates to assign to different product categories.

Create the override folder - override/modules/creativeelements

Then create a creativeelements.php file using this content:

<?php
// Different Product page templates on different Category pages
defined('_PS_VERSION_') or die;
class CreativeElementsOverride extends CreativeElements
{
    public function hookDisplayHeader()
    {
        if ($this->context->controller instanceof \ProductController) {
        	$id_category = $this->context->controller->getProduct()->id_category_default;
        	// category ID => template ID
            $map = [
            10 => 14,
            26 => 14,
            27 => 14,
            28 => 14,
            11 => 7,
            12 => 12,
            13 => 13,
            36 => 10,
            37 => 15,
            
        	];

        	if (isset($map[$id_category])) {
        		Configuration::set('CE_PRODUCT', $map[$id_category]);
        	}
        }
        parent::hookDisplayHeader();
    }
}

 Map your product categories to the appropriate template IDs