Product Listing back-end for React Native Multi-Vendor Marketplace

Question

I've just started building this multi-vendor marketplace idea I've had for a while. I am using react native, xcode, cocoapods, firebase&firestore, and javascript as my language. My app is a 3-sided marketplace (B2B2C) and contains 5 different user groups, 4 of which will have the ability to list products and only 2 will have the ability to purchase products. My question is would firestore be a good approach to handling these listings and if so how would you set up the product listing feature backend for each of the 4 user groups considering each product listing contains slightly different input/data fields. Also if anyone has leads/guides on product/post listings, adding/fetching user inputed data and queries, and/or react native multi-vendor marketplace apps please let me know, I just need some guidance to get started.