Here’s a random idea out of left field, but I absolutely love carrying my Timbr Turner as a pocket carry. It’s not too wide, and I enjoy playing with a fixed-axle yoyo and carrying it with me gives me more opportunities to do so. I play unresponsive 95% of the time when I’m at home, so having a responsive yoyo with me when I go out can be really fun for a change of pace.
I don’t have a lot of experience with slim throws beyond that, though I love my Zeekio Slim Jim. It’s responsive too, but I think you can make it unresponsive with a long axle and wider bearing. I think it’s out of stock most places though.