Each level has 3 stages: lower, middle, upper:
Academy Level - AOE: 0.5-5 meters
Genin Level - AOE: 10-20 meters
Chunin Level - AOE: 30-50 meters
Special Jonin Level - AOE: 50-80 meters
Jonin Level - AOE: 100-200 meters
Elite Jonin Level - AOE: 300-500 meters
Kage Level - AOE: 1-2 kilometers
Super Kage Level - AOE: 5-10 kilometers
...
Skill Levels:
Entry - You've learned it. Long hand seals, low efficiency.
Mastery - Proficient; Stable Execution
Small Achievement - Faster hand seals, practical in battle, limitede strategic use
Great Achievement - High-level execution, creative usage, few flaws
Perfection - Understood Fundamentals; no wasted motion
Artistic Conception - Merged Will/Path with skill; transcends the ordinary
...