Wow that's quite a load of useless crap, sensory information overload. For lack of a screenshot I imagine this is not presented in a consistent manner.
Apart from this inconsistent and confusing presentation, there is not much difference in actual results:
duckgo offers results all with the same consistent appeareance:
Actually, it's pretty consistently designed and laid out - that's not something you can fault Google for these days. Here's a screenshot of Google https://i.imgur.com/tiVr0bd.png to compare with DDG https://i.imgur.com/01Lkf2z.png (with no ad-blocking on mine) - interestingly, the top adverts are the same, both CircleCI, but I prefer the Google version, which has pricing as well, much more likely to lead to a click. Also, DDG has a second advert, under the infobox on the right, so actually 200% of the advertising that Google serves!
Apart from this inconsistent and confusing presentation, there is not much difference in actual results: duckgo offers results all with the same consistent appeareance:
1. github's homepage
2. wikipedia page about github
3. github's twitter
4. github desktop homepage
5. github's facebook
6. github's youtube
and then a load of github related results, as you can see here: https://i.imgur.com/bpDlNT1.png