Here is a brief list of known data entity locations in the Control Panel available for BigCommerce stores for reference:
Design and Content Migration
Pages
Storefront > Web Pages
Widgets
Widget Templates
Coupon Codes
Marketing > Coupon Codes
Banners
Marketing > Banners
Abandoned Cart Email Templates
Marketing > Abandoned Cart Emails
Email Templates
Marketing > Transactional Emails
Blog Posts
Storefront > Blog
Active Theme
Storefront > Theme
Product Data Migration
Brands/Brand Metafields
Products > Brands
Categories/Category Metafields
Products > Product Categories
Products/Product Metafields
Products > View
Product Reviews
Products > Product Reviews
Price Lists
Products > Price Lists
Price List Assignments
Price List Records
Promotions
Marketing > Promotions
Order Data Migration
Orders
Orders > View
Gift Certificates
Orders > Gift Certificates
Customer Groups
Customers > Customer Groups
Customers/Customer Attributes
Customers > View
Store Settings
Currencies
Settings > Currencies
Channel Currency Assignments
Channel Customer Settings
Channel Order Settings
Email Statuses
Search Filters Enabled
Search Contextual Filters
Store Locale
Store Front Robots
Store Front Search
Store Front Seo
Store Front Status
Web Analytics Providers
Catalog Settings
Inventory Notifications
Store Logo Settings
Store Profile
Storefront Category Settings
Storefront Product Settings
Storefront Security Settings
Shipping Zones
Shipping Methods