Alignment is super-useful as a thumbnail sketch for where a character is ethically.
• Good (altruistic)
• Evil (predatory)
• Lawful (group oriented)
• Chaotic (individual oriented)
• Neutral (mixed)
• Unaligned (beast, plant, etcetera)
Now once an alignment is decided on, I also like a sentence describing HOW the character puts that alignment into action.
For example, a Chaotic Good person might go out of ones way to help out an individual be the best version of oneself, but dislike social expectations.
Gandolf who I view as Neutral Good, is humble like ash and self effacing, but is passionate like fire in pursuit of ideals.
The choice of Alignment definitely belongs with Ideal and Flaw.