Hmm.. since every company promises a focus on privacy, isn't the bigger differentiator for the user that you run your own crawler? Do you use only your own crawling data?
Most definitely though Mojeek was the first on that front and yes, the search index is entirely from crawling the web independently. UK based. Our Twitter handle is very responsive if you ever need further info.
Thank you for the feedback. I tried to reproduce but could not. I'd be grateful if you could use the feedback button at the bottom of the search results as it may be result-specific wrt any horizontal scroll.
https://www.gnod.com/search/
You can switch on Ecosia when you click on "Select Engines".