If you only want to talk replicas, you are limited to those guns folks reproduced because that is where the money is.
But there were dozens of makes of percussion revolvers in the old days, and some are available at reasonable prices because they are NOT popular brands.
How about Cooper, Starr, Bacon, Bliss & Goodyear, Freeman, Hopkins & Allen, Adams, Metropolitan, Manhattan, all of which can be found at reasonable prices and in shooting condition.
It is a bit of fun to show up among folks with replica guns and start to bang away with a genuine "double action" Starr. No, it is not a Pietta, it is a Starr!