I. Bringer of rain / Dual-wield hammer of faith molten strike converted to cold damage, later switched to lightning: only good until a certain point. Definitely not uber worthy. Just wanted to look cool. Tried it on Amazon or ritualist, can't remember.
II. Shield Wall warbringer: great starter, pretty much stays consistent all the way through end game. Super formulaic progression and overall, really reliable. Later grabbed atziri spear and chernobog shield to make gameplay a little more exciting.
III. Zero duration His scattering calamity: my strongest build all season. Handled all content, lasers basically kill everything off screen. CoC wasn't mandatory but made it even crazier.
IV. Zero duration earthquake: didn't use the trench timber strat. Just a straight big bonker and palm of the dreamer. Massive screen clear, gigachad. Made me feel like I could deadlift a car in real life.
V. Spear field atziri spear Amazon: easy to the point of being boring. Like. Not bad at all. Really strong. But. Too simple and brainless.
VI. Fire bear shaman - wild visuals, cool as fuck with croc mtx. Keeps buffs on and explode everything. Did all content pretty well.
VII. Ritualist Caltrops Dodge build: stupid but oddly not bad. Wouldn't recommend but still funny as fuck.
VIII. Shankgonne instant Grenade detonation: funny and niche but honestly really strong for clearing the whole screen or piling hella grenades on a boss then dodging to blow them up all at the same time. Really fun as long as you get movement speed in another way(no sprint)
IX. Infernalist EW Doedre CoC max life recoup: no wonder everyone is playing EW CoC. Even on demon instead of BM, it's too OP. On demon I can get to nearly 200 stacks and the comets just just flood the whole screen with how fast I'm casting and how much spell damage I have.
There are more but they either suck to the point of being embarrassing or are still being leveled.