The simple Ant, blown into the stream or mountain lake. Let’s see how complicated one can make this two materials fly pattern. Foam, more visible indicators so you can see it, dubbed abdomen and thorax…I suppose those are worthy additions, but for starters black, brown, red bodies with the basic one to two turns of hackle. Floatation: would the super fine dubbing add to floatation over a thread body?
Both patterns are excellent producers and frankly fish engulf even the simple thread body leaving little doubt of their presence. Embellish the patterns with parachutes and foam if you must but the simple patterns work well also.