eBay business models

Assalamualykum respected muftis.

Question about eBay business models.

Which eBay business models below are permissible:

Private label-You can work with manufacturers to design your own private label items to sell on eBay.
Wholesale-This involves buying large numbers of products for a discount and reselling them for a profit.
Reselling-With arbitrage, you can buy discounted products from in-store or online retailers and resell them on eBay.
Dropshipping-Purchase products directly from vendors who can package and ship them directly to your customers.

I have copied and pasted the above from the following link:How to Sell on eBay in 2022: An Easy Guide for Shopify Merchants.

if you can advise .

Jazakallah