I consider SP and retro SP to be different due to minor differences. Retro SP is the old SPSO model.
There is a lot of clutter near the middle, but I tried to make every stand at least someone clarified. If you look for a stand in mind you're likely to find it.
I would probably put the OHs way lower due to balancing changes but I forgot to. Their "ezness" remains the same, though.
Only stands very near the bottom are considered "bad". If it's below the middle line, it's usually low to mid-tier.
I haven't used the tusk acts so I used my own discretion. Note that Tusk Act 4 is probably harder than I put it on the list.
Just my opinion of course. Criticize if you need.