Root Beer seems favored by bluegill and crackers in my lake, but , I confess, I have a large ziplock with EVERY COLOR THEY MAKE. LOL. But top 3 for sure are bison, sowbug, rootbeer, and the new color that looks like monkey milk.

I sometimes use a crappie nibble or a piece of Berkeley power wiggler (nod of the cap to @Alphahawk), but never a live worm with a TM.

When I do use live wigglers, like today, I use a plain jighead, no plastic, as small as possible. I have some 1/32 with #6 sickle hook I painted the heads multiple colors, but favor the black or crawfish red color. I find I hardly ever gut-hook a 'cracker when I use a small jig instead of a plain hook and splitshot.