I either use a size 8-12 hook with either a split shot 3 inches up on the line or a bobber (never together) or a 3/8 ounce darter head, rarely with a bobber. from there I cut half or 1/3 of a red wiggler worm and hook it on like you'd hook a swimbait. I also have 3-4 lb line on my shakespear micro series. This setup has caught everything from banded killifish to bullheads in freshwater, and gobies to small rockfish when the worm is swapped with shrimp in brackish settings.
Sometimes if the place I'm fishing isn't too heavily pressured I use micro swimbaits made for crappie.
I surprisingly have never caught any other hybrid green sunfish other than the small pumpkinseed hybrid. I could tell it was different from the surface, it was darker and stockier and I could tell its mouth was smaller. Its fins also looked more red from the surface.
Of Lepomis I've caught bluegill, greens, redears, redbreasts, and the green x pumpkinseed, and I've seen spotteds and greengills but those were in ponds at different cabela's.