Can anyone list large eCommerce websites that drop ship from Amazon?

Amazon themselves operate as dropshippers.

Why don't you try and look this up yourself?

Are you trying to become a online seller, Explain what you need and how you want to use it. Merely to buy from there, as noted they do their own

A dropshipper is by definition only a shipper, in a contract with a seller.
Amazon is both their own seller and a dropshipper for millions of mostly little sellers.
15 years ago, they (not amazon) were ripoffs. Overpriced junk that hadn't sold. They often substituted even worse junk. Big on ebay back then. Most of the little known ones are gone now.