Personally I find a 35mm a little odd focal length on crop cameras like yours. (I love it on FF, though.) Canon offers the 35/2 and 35/1.4L. I don't currently use either... both are good IQ, especially the L. Build quality is the two extremes... a notch above "entry level" and "L-quality". They don't offer anything in between.
I wanted bit wider and actually I went with Canon 28/1.8. It's an excellent lens, very compact, decent IQ, fast/accurate AF, usable on both crop and full frame, and with far fewer issues getting a "good copy" compared to the Siggy. About the same price, too. You'll find it very much like your 50/1.4 and 85/1.8, just wider and more compact even with it's lens hood.
Tamron used to make a lot of great primes... Now the only offer a few and those are all macro lenses (60/2 for crop is interesting for it's especially fast f2, 90/2.8 is quite good, haven't used 180mm, but image it's good too).
Tokina also used to make a lot of great primes, but now concentrates on zooms... They just offer the two macro primes: 35/2.8 and 100/2.8.
Sigma has more prime lenses, probably in part because they still sell DSLRs of their own as well and need a reasonably comprehensive lens system to support them. They have 20/1.8, 24/1.8, 28/1.8, 30/1.4 (crop), 50/1.4, 85/1.4 plus a series of macro lenses (50, 70, 105, 150 and 180mm) and several fisheyes.