The springs in my RE 2.5" standard lift were all identical.
I haven't hauled off my original springs yet, so I just checked them. Two are 4-leaf, the other two are 5-leaf. It is hard to tell since the arcs are a little different, but the lengths appear to be the same. However, I think that the center pin may be offset a hair.
'94 YJ, 4.0, 5-Spd, 31x10.5 ProComp AT, Rubicon Express 2.5" Lift
Next: SYE and 8.8
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Hang on! I'm gonna try something I saw in a cartoon one time.