At first I was skeptical, but this is great stuff. For example https://baymard.com/blog/autocomplete-design https://baymard.com/blog/autocomplete-design gives 1

At first I was skeptical, but this is great stuff. For example https://baymard.com/blog/autocomplete-design https://baymard.com/blog/autocomplete-design gives 13 subtle ways to make autocomplete better, and I agree with all of them.