scud
pheasant tail nymph
soft hackles
peacock and black woolly bugger
zebra midge
disco midge
hairwing adams
These are my second tier favorites:
foam caddis
stimulators
olive hares ear
Carrey Specials
The best floating mayfly imitation I have ever fished is a Quigley pattern called a hay stacker–I think. You really need a gallows to do it right but it is a para type tie except that you substitute mono for the post and tie it in at the rear of the thorax,