Forgetting about how he develops, is it fair to say that his current level is comparable to/ better than the likes of peak Robben, Ribery, Figo and almost comparable to Neymar's peak?
I think this is a pretty difficult question to answer for a number of reasons. You have winger versions and playmaker versions of Figo; Neymar was essentially a wide #10, like Ronaldinho and Messi. Ribery was more of a hybrid and Robben - like a young Figo - was a pure, unadulterated winger, doing winger things and looking to burn opposition and/or score.
Yamal doesn't play or get utilised like a pure winger; he is the chief playmaker of his team and everyone else looks to him to be definitive and make the final play; often times he does that without even moving from the position he's standing in; it's hard to compare that to a player who is reliant on beating players and causing havoc via their penetrative runs - Robben is one of the best wingers of all time, but standing still, like a playmaker, he carries next to no threat.
Despite winning the Ballon d'Or at Real as more of a playmaker, the better version of Figo (many including myself would argue) was the Barcelona hotshot who caused the controversy. He played as more of a pure winger at Barcelona, much more reliant on beating men and darting towards either goal or the touchline for a standard cross. The Barcelona version of Figo was relentless, aggressive and consistent. The Real version, more cultured, more passive, but more focused on playmaking and being #10 like than #7. I'd take Yamal the #10 over Figo the #10, but young Figo the #7, it's harder to call; he would do winger things from start to finish and be utterly dependable in the role. I am not sure Yamal will ever play as a pure #7 so it's asking for something we're not likely to see.
Robben's lethality and certainty makes him hard to pick over - it's not so much the spectacle with Robben; it's the getting things done and dusted. Closing out the game and being as definitive as you're going to get in a player cutting in from the right and concluding outside of Messi himself. Robben almost won Holland the World Cup and he was a different kind of unplayable to Yamal in that the whole stadium could know exactly what he was going to do in a game, but when he actually executed it, it was down to whether he hit the target or not whether it would decide a game. Nothing mystical or out of this world, just plain, old, lethal effectiveness. I'm still picking Robben to determine a game if my life depended on it over Yamal, but that's not to say it won't change as Yamal's finishing and individualism matures. Having said that, Yamal is still the more talented player.
Ribery at his best would've won a Ballon d'Or himself if it wasn't for the two freaks, so it's not some lowly bar. He won a treble and was the stand out performer that season. I think it's a difficult one to break down - I'd say he was par with Yamal in some aspects and better in others, but despite Yamal's semi finals for the ages, Ribery and Bayern actually won the CL that year, and it has to count for a lot. I'd par Ribery's peak with Yamal's season for his decisiveness and effectiveness, but what I'd also say is that the difference in talent is such that this, I would expect, is a standard season for Yamal, whereas that was Ribery's career season. Yamal is going to wrack up more like this one or even better it, if his health holds, imo.
Neymar's peak is ahead of Yamal for now, imo. Neymar's goal threat was as certain as Yamal's assist threat but in reverse, Neymar's assist threat was far greater than Yamal's goal threat - peak Neymar and Yamal playing right now in the same team, I'd expect Neymar to outperform him and be just as much of a showman and showstopper, if not more. Neymar's treble season was him swashbuckling with Suarez - who many recognise as the best striker of the 2010's at his absolute peak, and Messi, being Messi and easily holding his own throughout to form arguably the greatest attacking 3 of all-time. Yamal would not usurp any of them to get into that team and he'll have to improve his individualism to match that - peak - Neymar. Between the two of them, you have the most naturally gifted players outside of Messi in the respective era, so it's no shame to be behind peak Neymar at the moment. Unfortunately for Neymar, within Messi and Ronaldo mania and with Suarez playing at a dumbfounding level, a lot of the credit he should be due has been diluted and washed away, but this was Neymar holding his own in an/the all-time front 3 that shows no signs of being beaten.
So yeah, arguments in and around all of them, except Neymar, for me.
What's crazy is it's their peak versions and even then, there's arguments for and against a 17-year old. O.o