Hmm personally I think Cherki is above Camavinga as an overall talent, It's not just "flashy" bits, his technical level paired with his ambidextry and dribbling is very very scary, on top of that his set piece ability is probably already better than anyone at Lyon already.
Camavinga has had more playtime due to being one year older and fitting in nicely in a weaker side but Cherki on his second start ever dropped 2 goals 2 assists and proceeded to win a penalty (that he didn't take) against a Ligue 1 team, that's just nuts.
Now of course we'll be able to see more of both of them in Ligue 1 this year and in the CL as far as Camavinga is concerned (and perhaps Nations League this week if Deschamps is bold enough)