This for me as wellArrancar arc
Soul Society arc
War arc
Substitute Shinigami arc
Fullbringer arc
I totally agree1.Soul Society arc
2.1000 year Blood war arc.(First half! because right now it's meh)
3.Arrancar arc.
4.Fake Karakura Town arc
5.Fullbring Arc
Got the same list as you1.1000 year Blood war arc.
2.Arrancar arc.
3.Soul Society arc
4.Fullbring Arc
This war arc is by far my favourite arc with arrancar arc and soul society close to each other if not tie.