the Panoyaux sound systems happened in the 80's, not 70's. None of the toasters involved there recorded until the second half of the 80's.
There were a lot of french-speaking reggae tunes from various countries, a number blending other music genres in their reggae.
A lot mostly turned up from the early 80's on, at least when they came from metropolitan france.More came from other french-speaking places.
And no, the site mentioned isn't as comprehensive as it may seem.
One of the earliest french artist tohave recorded a reggae song is the dreadful Claude François, much before Gainsbourg.
As far as i know, there has never been a whole reggae album recorded by french speakers before the late 70's reggae boom (from 78 to 80).
Most of the french-speaking Antilles had their own vibrant music scenes and didn't go so crazy about reggae at first. A minority of people adopted it as their music of choice, though mainstream people had Bob Marley, Jimmy Cliff or Steel Pulse in their collections. To put it straight, it was mostly viewed as junky music and rastas were mostly frowned upon(at best!)if not cast stones at! (at least, in the FWI).
Haitian music wasn't much influenced by JA music (some tunes in the 70's):they were more busy influencing other french-speaking islands and african countries(Haiti took after Spanish-speaking islands and Africa).