Sigchan focuses on /sig/ or self improvement generals which are banned on 4chan. The jist is 4chan without anime/pron/degeneracy. No real focus on politics, only improving.
/fit/ – Fitness and Health, this is pretty analogous to 4chan’s fit, although it also encompasses mental health topics such as depression. Another addition is that anything that would belong in /fa/ also belongs here.
/fin/ – Personal Finance and Investing, this is analogous to /biz/, although I would prefer more investing than crypto discussion. Anything dealing with your own business, taxes, personal finance, and economics also belongs here.
/int/ – Intellectual Pursuits, this is an amalgamation of /lit/, /his/, and /sci/. I eventually would like to split this up when the activity warrants it.
/env/ – Travel and Outdoors, this is an amalgamation of /o/, /out/, /int/, /n/, and /trv/. Whether things that go on /k/ belong here I’m not sure yet, they seem to fit into both /hob/ and /env/ for now let’s just let them in both.
/hob/ – Hobbies and Interests, this encompasses everything not mentioned related to Improvement. Want to discuss chess? This is the place, want to improve your origami? Again this is the place.