Just as an example, the fish that I keep with my grass pickerel are as follows.
240 gallon tank. 2x2x8
1 sauger 14 inches
1 black crappie 9 inches
1 rockbass 8 inches
1 green sunfish 5 inches
1 yellow perch 8 inches
1 florida gar 12 inches
1 florida gar 14 inches
I have gone thru many sunfish trying to find an individual which is compatable. 90% of the time they are not, I have not tried orange spotted. The green that I keep in there is a very docile specimen.
Gar are great pickerel tankmates!
Do not even consider LMB or SMB.
IME yellow perch are very compatable, but a bit quicker on the feed.
IME crappie, at least black crappie are good tankmates, again quicker on the feed.
Key is to make sure that the pickerel have enough feed. They NEED to have time to stalk their prey. Therefore they cannot compete for food with a yellow perch for instance which will inhale any thing the instant he sees it move.
The truth is that pickerel are fantastic aquarium fish, you just need to provide them the correct environment for them to thrive.