This may not answer the question. But I read recently that bass in captivity preferred crawfish to bluegill something like 9:1.
But if you're trying to present a lure that resembles a bluegill in the proper location, I'd say find the bass and you'll be most of the way there. They won't be too far from the food source unless they aren't eating at all.
If they're on the bed, a bass won't tolerate a bream near its bed.
Then again, I catch bass on a lime colored Trick Worm in a small local lake. There are no 7.5" lime colored worms swimming in that lake.