Amazon is focused on it's own brands these days. It doesn't do as much about stuff it just delivers and we all remember horrible warehouse stories of poor working conditions but their own brands are more transparent and, I believe, much better "policed" than Temu.
I just looked these own-brands up and in the UK there are currently quite a few:
Amazon Basics - The most common brand. Includes batteries, cables, kitchen gadgets, towels, and office supplies.
Solimo - Primarily "consumables" such as coffee pods, razor blades, and food storage bags.
Presto! - Cleaning and paper products (toilet roll, kitchen towels etc)
Denal - hand tools and power tool accessories.
Umi - "lifestyle" type products, from picture frames to small furniture.
^Amazon Essentials^ - Their main brand for "basics" (t-shirts, trousers, underwear).
^Iris & Lilly^ - lingerie, swimwear, and nightwear.
^Core 10^ - Gym and activewear.
Hope this helps - as Amazon's problems are mostly around 3rd party sellers.
Own brand stuff is much better monitored.
Obviously anything with (say) lithium in it is questionable - as someone said upthread but you can select out the 3rd party sellers via the "Filters" menu. The Amazon ones are labelled "Our Brands" or "Amazon Brands" in the filters.