Appreciate Odin, especially the batteries included approach (simple to use structure of arrays, matrices, array programming, the context system for custom allocators, ...). To be fair though: the heavy lifting in JangaFX is likely done by a ton of C++ code, it being high performance real time graphics programming.

I assume C++ outweighs Odin in their code base by a significant margin (accounting for all dependencies).

JangFX is the company I believe. They have many products. One of them, EmberGen (a fluid simulator), is fully written in Odin. No idea what the rest are written in.