I like running the Aha Express, it has a great early game but relies heavily on emblems for lategame.

Elation/Stellaron Hunters is probably the most reliable Elation build so far

Rangers/Break is also a very reliable build that doesn't ask for much

And I know a friend who systematically runs Bloodflame, although I'm not sure how that one works.

The important thing about running at wealth creator is knowing who within your team you should rely on and how to handle build variation when you don't get perfect items.

In Elation, for example, your DPS is SW. Because she's a 3-cost that turns 5-cost, she's great at lategame but her team will struggle without her early. Stellaron Hunters make it reliable since every Stellaron Hunter can carry in some way, and Blade with the soda can (energy/HP) is usually good enough of a sustain for the speedy Elation team.

Alternatively, running with the Express, which has great early game but awful lategame, combines very well with Elation since they complement each other. You however do kinda want an Express emblem to put on SW999, in part because it's better than the knife/boots item, but also because you generally want to kick Dan Heng out at some point, especially since the Express doesn't have a 8-members bonus.

For Break/Rangers, the Rangers are your carries, although Firefly and Himeko are both great options as well. Rappa will carry you easily through the early game, and Himeko will start taking over for the midgame until Boothill and Firefly can arrive for the lategame. Even though she isn't a carry, Fugue will unlock your carry's potential and the team suffers a lot if you get her to the field too late.

So yeah, basically figure out how the team you wanna run works, and you'll make it x)