I really don't ex: "ice cream calories" share several but not all sites and use a different order for those they share, which just suggests similar algorithms.

PS: DDG redirected image searches to bing, but not generic searches. Which honestly seems reasonable as doing image search well is incredibly hard, with minimal payoffs.

Nope, for that search I once again got the same results in the same order.

It sounds like Bing is personalizing your results either by location or by adtech tracking, which is kinda antithetical to the point of DDG.