What comments in code review do you consider most significant, and which are least significant? At least three most significant and a couple of least significant.

Most significant comments during code review:

1. Logic and correctness of the code — errors that could lead to incorrect program behavior or bugs.
2. Security — vulnerabilities that could lead to data leaks or attacks.
3. Readability and maintainability — complex or confusing code that hampers understanding and future support.

Less significant comments:

• Minor stylistic inconsistencies, if they do not affect readability.
• Formatting preferences that do not violate the overall project standards.