Here, the choice also raises the question of personal preferences and principles, and not only that. After all, there is no definitive and clear criterion for determining the essence of an 8th-level creature. Anyone can write virtually anything, and they will be right. Every single person can evaluate a particular creature for different reasons (strength, beauty, usefulness, etc.), and it is impossible to dissuade such a person, IMHO. But in your choice, be objective, justify and argue your position, and that's it:), - this is probably the most important thing in the created topic. Sincerely.