I generally use Bronzelock/Leprechaun with damage smooshed between them that can either win outright, get an extra turn, or lead back into Bronzelock/Leprechaun.
Bronzelock/Infernus/Ishbaala/Leprechaun (any class with a storm, pref infernus colors)
Bronzelock/Titania/Leprechaun/Leprechaun (any class with a storm that fills Titania turn 1, pref red)
Bronzelock (knight for lightstorm)/Gaard’s Avatar/Lord Ember/Leprechaun
Rush the II treasure rooms for a chance at Cedric’s Hideaway for extra fun with Bronzelock. But basically any Leprechaun + Storm into Win Condition setup, Bronzelock is just there for backup because it can both generate and clean up stragglers nicely, has no color overlaps with what I use, and is fun with 4x moneybags.
Titania variant can do sub 4 min full clears, but the wrong set of rooms can slow you down significantly. Infernus is a steadyier 4 ish minutes. Gaard’s Avatar was for funsies when I needed 3 knight 3 brown under the old daily task system but ended up being almost as fast as Titania (just mostly because it overkilled most rooms, where Titania might need 2 shots sometimes but extra turns her first one often).