For my money I'll rank them like this:
1 - COLD WATER Crappie
2 - Walleye
3 - Yellow Perch
4 - Bluegill
5 - Trout
I'm specifying the water temp in my first selection because in my opinion crappie out of warm water is not nearly as good....the flesh is too mushy.
I'll also say that my #5 choice may fall higher on my list if eaten more....I've had hundreds of meals of the top 4 prepared many different ways, but few of #5.