Rivals three star but his list of offers in impressive: USC, UCLA, Washington, Stanford, and Tennessee (who is killing it on the recruiting trail this year.). Interesting he wasn't offered by Oregon.
As he's relatively new to football, Rivals may not know much about him. IIRC Jalen Redmond followed a similar path e.g. didn't start playing football until he was a junior? I know that, as a senior, Redmond was one of the most impressive HS players I've seen.
In any case, he looks to be a great pickup regardless of the lack of consensus among the recruiting services and I'm certainly glad to have him as a Sooner!