Just in case you don’t already know, but you can ignore the glory kill mechanic.

Not exactly, they are search engines in their own right that have their own crawlers, but also use the Bing API. Leta is literally a proxy, it searches on the google (or brave) search website on your behalf and serves you the results. That way the only data Google gets is Mullvad’s.

I think that would be Qwant. This is a search engine proxy.