Re: Anker chargers, a few perform pretty well but many are kind of middling. A friend has been doing a lot of reviews of these on Youtube (https://www.youtube.com/c/AllThingsOnePlace) and we started compiling test data- focusing on power conversion metrics such as efficiency and power factor, summarized into a single "power quality score" on a 0-200 scale- in a database at https://pqs.app.
For example, for the Anker power adapters we've tested: https://pqs.app/devices?categoryId=1&search=anker. We're also trying to turn it into a business.