I think the f/1.4 lenses are both fairly good. The 35/1.4 is a bit too characterful for my taste, but it is still a solid lens, and I don’t find the 35/1.8 to be especially better, especially given its high LoCA.
I own both the 50/1.4 and the 50/1.8S and I’ve been debating the last several months which to keep. The 1.8 is a slightly better lens, but the differences with both at f/1.8 are actually quite small, and while at f/1.4 there’s a slightly rougher rendering, it still is better than most 50/1.4 lenses from the DSLR era, and still quite sharp across the frame wide open. It’s quite a good lens, and I am leaning towards keeping the f/1.4.
I think an 85/1.4 will be even better, and hopefully will be a great sweet spot.