I quit watching American Idol about ten years ago, but every once in a while I'll check out some recent contestants on youtube. Last night I binge watched performances by Alejandro Aranda (stage name: scarypoolparty). He came in second in the 2019/17th season of American Idol. This guy comes across as sort of a shy, musical savant with excellent keyboard and guitar skills. Notably, he performed seven original songs during his time on the show. He reminds me a little bit of Stevie Wonder.
Check out this one called Blesser, music starts at 1:30.
Here is a longer version of Blesser, very raw recording with mad keyboard work:
This guy may be the most talented musician ever to appear on that show IMHO.