I rather like 1866 for the Chanel-inspired jacket vibe. I've been wanting to make a Chanel jacket for an age (what was it, about a decade ago when they were all the rage in the home-sewing community?), but haven't gotten around to it. I've pretty much got all of the fabrics and notions (except the chain to weight the hem), and a variety of patterns to choose from, including Claire Shaeffer's Couture Cardigan Jacket book and her pattern (wherein she shows how to make the distinctive Chanel three-piece sleeve). Dunno. Maybe I should make that my big project for the year (assuming I ever get my sewing room squared away -- we moved 14 months ago and it's still inundated with boxes which need to go elsewhere, which has been held up by bathroom renovations). OTOH, I'm desperate for new basics, so ... meh.
You might have better luck in r/sewing, but here's my two cents:
I've used PatternReview.com to search for specific sewing patterns and find helpful advice for new projects. If you are confident in garment sewing techniques, any similar non-quilted jacket pattern can be modified for a quilted construction. I'd also recommend Claire Schaeffer's book Couture Sewing: The Couture Cardigan Jacket for techniques specific to the Chanel-style quilted jacket. Schaeffer also designed jacket patterns for Vogue Patterns that include instructions for the signature vertical lines of quilting; however, none sport the round collar style in your picture.