If you look closer, Kagi uses Mojeek for organic results, not images

I guess to me anyway, images/news etc is a sideshow to the wider web, as in a crawler/indexer and not a pretendy meta search.

hmm, I am not certain that I prefer the option without the source listed. For example, I might prefer an image from Wikipedia over another image. Or if I am searching for a map and the URL has the word 'historical' I would not choose that one. etc.

It depends on what I am searching for and why I want to use it.