Tough when you consider "all" fish, trout don't hit poppers (hmmmm) and the sunfish beat the bass to the dries 99%
- any sedge dry fly, elk etc.
- black marabou wooly bugger
- tan biot beadhead nymph
Not the 'elegant' fly list, but meat and potatoes dry, streamer, nymph. I also factored in steelhead with trout and warmwater species in this list (no saltwater considerations per your question).