Cleanest, best written rust codebases?

As my journey of learning rust continues, I find myself very dissatisfied with the quality of the rust code I wrote years back.

Yes, my code passes clippy, is nicely formatted, avoids excessively complex nesting / control flow, but it still feels... subpar(hard to understand and reason about), from time to time.

I was wondering if people here have examples of really clean, sleek codebases I could reference, to improve the quality of my code?