The thread is about the top 5 & I think you have them !
The top 5 have become well known on GCA thanks to a number of people, mainly Paul Turner, Noel Freeman & Ran.
However, there are a lot of very good, or potentially good golf courses in France, depends how fussy you are, or may I say, how snobbish you want to be. Colt & Simpson courses are all worth a visit, but many other courses may also surprise you.
There are some high profile works on some courses, and understated works on others, this does not mean that marketing is telling the whole truth. Some exciting projects are also in the pipeline with some big names.
Fontainebleau is underrated, as is the potential of similar sites like Rochefort. Links lovers can't ignore Granville, and purists can't ignore Chiberta or Hossegor. The list goes on ... Saint-Cloud, Biarritz, etc. etc.