Great post, will check this out. Jaqcues Rivette is one of my favourite directors of all time (who I find very rarely ever mentioned). Did you find any articles specific to his films at all? My partner got me this book for Christmas: https://www.amazon.co.uk/Jacques-Rivette-Contemporary-Film-Directors/dp/0252078349 But I can't say I have read it yet so not sure how good it is, covers virtually all his films. I also luckily found a BFI interviews/essay book in a charity shop here in the UK.
http://exmilitai.re/ is a site I really liked that covers left wing politics with films (they even have streams of some great Eastern Euro films like On the Silver Globe) however, they seem inactive now which is a shame