yesterday I read an article that said 10 percent of autistic folk have savant skills, but I looked and could not find the source of that claim.
Savant definition varies quite a bit , from "idiot savant" to Savant simply meaning "learned".
I can say I am a language savant ( english language only) , having tested far higher than average on IQ and neurological/psychological tests all my life, but I think the definition of"Savant" you might want to discuss here needs to be better defined so we understand which input you are requesting.
Here is a wiki bio of a very famous autistic savant individual https://en.wikipedia.org/wiki/Daniel_Tammet