Few nice names. I would go a bit detail on Gourcuff since i liked him a lot back then. He was among France's biggest talents in 2006, also the year Zidane retired. So post World Cup, his name was even more popular. He was viewed as the undisputed Zidane's heir (nickname "Le scuccesor" by L'Equique). His moves, his way of handle the ball really resembled Zidane. Then Ac Milan decided to bring him San Siro when he was just 20 years old. That was when his career started to change.
At only 20, he could not find a way to compete agaisnt Milan's stacked midfield with the like of Kaka, Pirlo, Seedorf... And he was isolated. A big blow to one of France's biggest talents and all of Zidane's comparison before (Zidane also moved from France to Italy and made his name there) was dusted.
2 years later, in 2008, Laurent Blanc brought him to Bordeaux. 2008/09 season saw him at his best. 17 goals in 37 matches in Ligue 1, being an absolute ace that helped Bordeux win the tittle. Then the comparison with Zidane was alive again. Especially after he scored his most famous goal vs PSG. A very Zidane-esque goal. However the following season, his form dropped and also injuries. All affected him badly.
And World Cup 2010 happened. France were a shitshow. Domenech (France's coach) wanted to build the team aroud Gourcuff. However, that decision made their veterans angry. They (particularly Ribery and Anelka) didn't even pass the ball to him. France coaching staffs tried to fix, but things got even worse. Anelka was sent home after his conflict with Domenech. The whole France team collapsed. Gourcuff himself also got sent off in the match vs South Africa. Once again he was isolated and lost.
He pretty much could not recover after 2010 WC. And that was the end for the Zidane's heir people hoped for.
Now looking back, i think he was never the man who was worthy to be called Zidane's heir. He could replicate Zidane's move but like you can replicate work from great artist but never can have its soul. He also didn't have enough mental strength to fight in tougher enviroment.