Okay, so I tie a lot of variations on existing patterns so some of my favorites are conglomerations.
Trout: Like Andrew, I primarily fish a bugger or double bugger if going streamer, my favorite trout dry is the Mr. Rapidan (easy to see)
Bass: Popping Bug up top, crawfish imitation below (my go to is a bugger variation with claws, but I've been experimenting with some other patterns of late)
Striper: Flattail
Shad: chartreuse...anything chartreuse
Pickerel: Bulkhead deceiver
Musky: Gamechanger (bc it's the only fly I've caught one on)
Snakehead: Fugly Frog
Most Gratifying Tie: Dahlberg Diver