I've been using Ubuntu on a yoga 2 for nearly a decade. I haven't used the touchscreen in ages but I used to do a lot of inking and it was pretty good out of the box. It only has a 4 gigs of ram though and isn't upgradeable so it's not as useful as it was
I think you have it swapped?
Searxng aggregates search results from multiple search engines.
Kagi is it's own search engine.
edit: https://help.kagi.com/kagi/search-details/search-sources.html#search-sources Looks like Kagi does aggregate to some degree.