To be fair, Wikipedia has access to a lot more primary and secondary sources for people in the 20th century than for people in the first, so I don’t know that Wikipedia is the best metric.
I find it very hard to believe that Jesus never existed. That he's the son of god is debatable - but I thought his existence has been pretty concretely proven time and time again.
Several prophets (likely more than one with the then common name Jesus) had a following in Roman-occupied Palestine. The bible figure is likely an exaggerated amalgamation.
John Lennon once famously claimed the Beatles were "More popular than Jesus" [1]. His notability index is 27. I guess he must have been right.
https://en.wikipedia.org/wiki/More_popular_than_Jesus