I've been looking for longer French lists, and I've started searching in French as well, but nothing great has turned up yet. The most common items seem to be imdb filters, allociné ratings (which operates like imdb, but they also have a wider scope of "French" than I'd like - their #2 French film right now is Capernaum (from Lebanon)).
I did find this list from Sens Critique, though, which I found kind of interesting so I added it to icm: https://www.icheckmovies.com/lists/sens ... genaprido/
It's also based on user ratings, and it seems they have these sort of auto-generated lists for all countries, genres, directors, and themes imaginable. This list is a mix of critically acclaimed films and popular favourites. It's only 100 titles though.
If anyone does find other French lists, especially our francophone members, please do share. A Top 200-250 would be ideal. I'm also interested in lists that skew more populist than critical, as the ones on icm that we have are already more critic-leaning.