User blog comment:TheDoctor230/Arrowverse Season's Ranked/@comment-33398491-20171027020603

Here's how I would rank the seasons:

Complete Seasons

12. Supergirl Season 2

11. Arrow Season 3

10. Supergirl Season 1

9. Arrow Season 4

8. DC's Legends of Tomorrow Season 1

7. The Flash Season 3

6. Arrow Season 1

5. & 4. Arrow Season 2 & DC's Legends of Tomorrow Season 2

3. & 2. The Flash Season 1 & The Flash Season 2

1. Arrow Season 5

New Seasons (3 episodes in):

4. Arrow Season 6

3. Supergirl Season 3

2. & 1. DC's Legends of Tomorrow Season 3 &  The Flash Season 4