Type 1: HTML SelectThis is the most basic interface that displays a drop-down list with text and value only. Basic and easy, it’s compatible with any WordPress theme you use on your site. Users can’t ask for more from this interface than its responsiveness and simplicity.Type 2: ddSlickddSlick is a seamless interface that includes a drop-down list with an image and description for each variation. While the HTML select tag only offers text and value on display, ddSlick adds more information and visuals to your product with images and a short description for each option. This is also widely favored by users as it provides a beautiful and clean display of variations for your online store.Rendered from HTML options, the switch from the basic interface to ddSlick is easy and satisfactory for users. You can also set up a default select option with this interface to be displayed as the first shown selection of the drop-down list and increase the interest in that product/ variation.Type 3: Select2Most WooCommerce common users prefer ddSlick over others as it’s informational and neat. In fact, there’s more to the Select2 interface than you might know. Select2 is an improved interface from the HTML select tag, which replaces the options with select boxes for a single selection of variation at a time. Meanwhile, Select2 also offers an image and short description per variation just as ddSlick.