Yes. I was talking about the top players who both played the opening regularly and drove the current theory forward. In terms of driving the theory alone, our own John Watson had a huge influence in bringing many French lines to the attention of the chess world. For example, simply 4.e5 c5 5.Nf3 in the Winawer was virtually unknown until Watson investigated it.

Furthermore, it was Watson who popularized the Winawer as a whole at club level. Here's Buecker:
Stefan Buecker wrote on 06/02/10 at 02:25:45:

Petrosian also played the Winawer a lot, essaying slowing ideas like meeting a3 with Bf8 or meeting 6....Ne7 7.Qg4 Ng6 or 6...Qc7 7.Qg4 f5.

Historically the big names in the main lines are Botvinnik, Korchnoi, and Uhlmann; others include Vaganian, Lputian, Nikolic, and Yusupov. Nimzovich, of course, pioneered the line, which bears his name in many countries,  but none of his games is in  today's main lines of 4.e5 c5 5.a3. It was Botvinnik who had to respond to these lines at the top level and thereby invented the Winawer in its modern form, which I think has very much a Soviet feel. Some current regular practitioners are Vitiugov, Bartel, and Shulman. A lot of top players use it occasionally.  Steve Giddins gives a good history of the development of line in his Move by Move book on the Winawer.