I've been curious about something, and I'm basing my first playthrough on it. How many collectibles can be obtained without expanding any worlds? I'm kinda busy so I've not finished this yet, but I was wondering if anyone else had looked into this. So far, the totals in each world don't seem consistent, which seems weird, and I'm not convinced it's just because I'm bad

Would be interesting to have an official list so people could attempt this and know what to aim for.