Crappie has ZERO taste period. It tastes like whatever you season it with. Not a bad thing, it is a clean, white meat. I'm just not crazy about how soft, borderline mushy the texture can be if not cooked perfect.
White Bass on the other hand are a much firmer meat, hold together a lot better and have some actual flavor but I would NOT consider it fishy at all. Crappie you can just mush around with your tongue and swallow, White's you actually need to chew a bit.
Shave the red meat off, cut out the blood line or whatever it is and it's great piece of meat.
Bluegill has a flavor, I much prefer it to crappie and it's also not as mushy. I think Crappie's popularity as a game fish and table fare is because it's the dumbest, easiest fish to catch that swims in any body of water.
Mitch where are you catching your white's? I have had some out of the Mississippi River that I did think were a bit fishy tasting.