These are only a small number of them.
Simple spider - reasonably sparse - Dark Furnace or greenwells hackle depending on what you are imitating.

Simple spider - slighty heavier dressed hackle

Stewart Style

Mike Connors - softwing
Wing: A few Fibres from Waterwing under or over covert
Thorax: A small ball of hares ear & body guards , stroked downwards with velcro

Mike Connors - softwing, emerger version my twist to linger longer in meniscus as an emerger.
Wing: A few Fibres from Waterwing under or over covert
Thorax: A large ball of hares ear & body guards, stroked downwards with velcro

Mike Connors - softwing with split wing on websters style, though using soft coverts from waterhen.
Wing: A few Fibres from Waterwing under or over covert
Thorax: A ball of hares ear & body guards, stroked downwards with velcro

Allthough I refrain from showing it here a small number of CDC dry versions will account for a majority of trout i catch each season on dries.