Pafer is super for coffee Shops, chocolate Bars, restaurants, cafe and drink or any other categories with 5 homepages variation, 5 header styles, and unlimited mega menu layouts.
Demo: https://themeforest.net/item/pafer-coffee-shops-cafes-shopify-20-theme/52076962
BabyStreet is a premium WordPress / WooCommerce niche theme suitable for Baby Store, Kids Shop, Toy Shop, Kindergarden and any kids related website / shop / blog.
Demo: https://themeforest.net/item/babystreet-woocommerce-theme-for-kids-and-baby-shops/23461786
Cofar is a Multi Store Responsive Shopify Theme suitable for every type of store.
Demo: https://themeforest.net/item/cofar-coffee-shops-cafes-shopify-20-theme/49344202
WooCommerce API Product Sync plugin can sync automatically product from one WooCommerce web store (shop) to the other WooCommerce web stores (shops) when product add / update.
Demo: https://codecanyon.net/item/woocommerce-api-product-sync-with-multiple-web-stores-shops/21672540
Kopiko is a versatile and user-friendly Shopify theme. It gives you stylish page layouts and sections so you can easily design your attractive online store.
Demo: https://themeforest.net/item/kopiko-coffee-shops-cafs-shopify-theme/35372191