It looks like Kanel is actually alot more feature rich, I wouldn't see any advantage of switching.

I started using schemats because it's a single CLI interface and gives me all I need. I put together a few tools for a typescript heavy backend development experience and one of my requirements was that each one would be powerful enough to achieve my goals + not powerful enough to trip on how to use it (or in schemats case, patch it).

Currently schemats and ts-json-schema-generator got me there, only issue was schemats was a few years out of date so the types weren't as friendly.