I tried the 100 free searches from Kagi and compared the results to DDG. In almost every search the results were the same. Even the order. I think the real benefit to Kagi is the lack of ads and tracking, tha's all.
I think the real reason search sucks these days is the AI they put between you and what your looking for. It's no longer searching for what you typed, it's searching for what it thinks you want.
You forgot traitor. It's the worst one in my book and shouldn't be left out.