Is this Google gimmicking the result or merely a reflection of the fact that these sort of groups put up a lot of pages with the exact title "Who is Jesus Christ"?
It's a search engine not a discerner of truth.
Exactly. Google is simply a search engine, and is not ‘all knowing’. Not even this current Pope could be called ‘all knowing. People tend to waste emotion when algorithms do not behave like an actual human being with a mind, a heart and a soul.
I had been using Ixquick but they shadow Google now so I quit them. Duck Duck Go is my go to now. And they gave the right answer.
Beat me to it. :-) After watching the video, I had that idea too and tried it -- Google search results. Google results vary some by location, especially by country, but mine matched yours, with the Jehovah's Witnesses first, next LDS (Mormons), then -- I'm guessing without checking them -- other groups noted for their proselytizing.
As you suggest, that ranking probably has to do with which groups have the most traffic associated with that particular question rather than with leftist propagandizing.