Mostly eggs for me. Estaz eggs in chartreuse, blue, apricot, orange, and red and sucker spawn in oregon cheese, apricot and pink. Generally in size 10, but have a few size 8s when the fall fish are aggressive. Also a few dead eggs (cream colored) in 10 and 12 when the fish get snooty late in the season. I start with the legal limit 48" dropper to a swivel where I attach the weight. I replace the dropper when it gets about 3 ft. You go through tippet up there because snags and fish are hard on them. Check your tippets often and cut off rough sections. A good steelie will find those weak spots pretty quickly and pop you off.
Most eggs work, I can tie Estaz eggs and sucker spawn quicker which is why I like them.
Black or olive Zonkers/Buggers/wool head sculpins all seem to do the same work. Like them with or without an orange bead. These flies in white will do OK too.
Finally, when I am in the mood for more elegant flies I tie on traditional Atlantic salmon or steelhead wets.
Not a big nymph fisherman, but prince nymphs and green rock worms have worked for me.
Sink tips are a more elegant way to fish streamers and wets than splitshot IMHO. Only need a short tippet of about 3' when using a sink tip.