The "official website" links can be retrieved in a machine-readable way from Wikidata. E.g. a completely random silly example of official websites of embassies:
https://w.wiki/5T3R
I've been considering building my own search engine for a while for my niche topic which has <50 websites and blogs on the web.
I can't tell how useful this will be but it'd be fun to give it a go.