The type of option, which determines how it will display on the storefront. Acceptable values: radio_buttons, rectangles, dropdown, product_list, product_list_with_images, swatch. For reference, the former v2 API values are: RB = radio_buttons, RT = rectangles, S = dropdown, P = product_list, PI = product_list_with_images, CS = swatch.
sort_orderinteger
The order the modifiers display on the product detail page.