Best Anime Aura Farmers

In my personal profesional oppinion the best overall aura farmer is the character that manages to fit the most high quality aura farming throughout one season. There will be some exceptions to this such as:
The anime is trash
The character has bad character development
it is not animated
click here for a source on the best anime aura farmers acording to public opinion.
The list of Anime Aura Farmers (AAF) that I will be covering can be seen below:
Sung Jinwoo - solo leveling
Killua - Hunter X Hunter
Piccolo - Dragon ball