https://trends.google.com/trends/explore?date=now%201-d&geo=...
As expected, Biden and Trump as presidential candidates and former POTUS are better known. Messi has way better recognition than Lebron worldwide owing to soccer's broader appeal and popularity.
Search interest obviously isn't a direct correlation to name recognition - you can have recognition and no one is interested in you - but I'd say it's far more likely that people know who Lionel Messi is considering he won the World Cup in a spectacular fashion and 1.5B people watched the world cup live & I'm sure more than that many people heard about it.
No, it is not, but I'm willing to admit that my antipathy towards spectator sports may have led me astray here.