Just in categories, not sorted in the categories. From perspective what I enjoyed the most as a viewer.
A means still very good tournament, but not enjoyable enough that I can watch every match.
Maybe 1-2 of KotD and Hidden Cup should be in my S tier list, but I don't remember that well.
For production quality the list will be different, but then the old tournaments can not be S tier, because we did not have good Capture Age, big resolution streams... So I categorized for my favorites.
Terra Nova Duos and World Desert Championship are close to S tier for me, but with lower prize pool and not all top players playing seriously there they are behind all of the NACs, KotDs, Hidden Cups, Nations Cups...