Product cards — image ratio, second image on hover, quick add, short description (from custom.subtitle), rating (from your reviews app), vendor, color swatches and the low stock note threshold.
Support — a floating WhatsApp button, your WhatsApp number and prefilled message, support hours and email. The number is also used by the WhatsApp question block on the product page, which includes the product link in the message.
Social media — add profile links; icons appear in the footer and empty fields are hidden.
Currency format — show currency codes next to prices.